diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index 216e79b..e8ea671 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -160,7 +160,7 @@
 
         mTISBindHelper.onDestroy();
         if (mTaskbarManager != null) {
-            mTaskbarManager.clearLauncher(this);
+            mTaskbarManager.clearActivity(this);
         }
 
         if (mLauncherUnfoldAnimationController != null) {
@@ -318,7 +318,7 @@
 
     private void onTISConnected(TISBinder binder) {
         mTaskbarManager = binder.getTaskbarManager();
-        mTaskbarManager.setLauncher(BaseQuickstepLauncher.this);
+        mTaskbarManager.setActivity(this);
         mOverviewCommandHelper = binder.getOverviewCommandHelper();
     }
 
@@ -348,6 +348,10 @@
         mTaskbarUIController = taskbarUIController;
     }
 
+    public @Nullable LauncherTaskbarUIController getTaskbarUIController() {
+        return mTaskbarUIController;
+    }
+
     public <T extends OverviewActionsView> T getActionsView() {
         return (T) mActionsView;
     }
@@ -371,10 +375,6 @@
         return mDepthController;
     }
 
-    public @Nullable LauncherTaskbarUIController getTaskbarUIController() {
-        return mTaskbarUIController;
-    }
-
     public TaskbarStateHandler getTaskbarStateHandler() {
         return mTaskbarStateHandler;
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
new file mode 100644
index 0000000..24a88a4
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.taskbar.TaskbarStashController.FLAG_IN_APP;
+import static com.android.launcher3.taskbar.TaskbarStashController.FLAG_IN_STASHED_LAUNCHER_STATE;
+import static com.android.launcher3.taskbar.TaskbarStashController.TASKBAR_STASH_DURATION;
+
+import android.animation.Animator;
+
+import com.android.launcher3.statemanager.StateManager;
+import com.android.quickstep.RecentsActivity;
+import com.android.quickstep.fallback.RecentsState;
+import com.android.quickstep.views.RecentsView;
+
+/**
+ * A data source which integrates with the fallback RecentsActivity instance (for 3P launchers).
+ */
+public class FallbackTaskbarUIController extends TaskbarUIController {
+
+    private final RecentsActivity mRecentsActivity;
+
+    private final StateManager.StateListener<RecentsState> mStateListener =
+            new StateManager.StateListener<RecentsState>() {
+                @Override
+                public void onStateTransitionStart(RecentsState toState) {
+                    animateToRecentsState(toState);
+
+                    // Handle tapping on live tile.
+                    RecentsView recentsView = mRecentsActivity.getOverviewPanel();
+                    recentsView.setTaskLaunchListener(toState == RecentsState.DEFAULT
+                            ? (() -> animateToRecentsState(RecentsState.BACKGROUND_APP)) : null);
+                }
+            };
+
+    // Initialized in init.
+    TaskbarControllers mControllers;
+
+    public FallbackTaskbarUIController(RecentsActivity recentsActivity) {
+        mRecentsActivity = recentsActivity;
+    }
+
+    @Override
+    protected void init(TaskbarControllers taskbarControllers) {
+        mControllers = taskbarControllers;
+
+        mRecentsActivity.setTaskbarUIController(this);
+        mRecentsActivity.getStateManager().addStateListener(mStateListener);
+    }
+
+    @Override
+    protected void onDestroy() {
+        mRecentsActivity.setTaskbarUIController(null);
+        mRecentsActivity.getStateManager().removeStateListener(mStateListener);
+    }
+
+    /**
+     * Creates an animation to animate the taskbar for the given state (but does not start it).
+     * Currently this animation just force stashes the taskbar in Overview.
+     */
+    public Animator createAnimToRecentsState(RecentsState toState, long duration) {
+        boolean forceStashed = toState.hasOverviewActions();
+        TaskbarStashController controller = mControllers.taskbarStashController;
+        // Set both FLAG_IN_STASHED_LAUNCHER_STATE and FLAG_IN_APP to ensure the state is respected.
+        // For all other states, just use the current stashed-in-app setting (e.g. if long clicked).
+        controller.updateStateForFlag(FLAG_IN_STASHED_LAUNCHER_STATE, forceStashed);
+        controller.updateStateForFlag(FLAG_IN_APP, !forceStashed);
+        return controller.applyStateWithoutStart(duration);
+    }
+
+    private void animateToRecentsState(RecentsState toState) {
+        Animator anim = createAnimToRecentsState(toState, TASKBAR_STASH_DURATION);
+        if (anim != null) {
+            anim.start();
+        }
+    }
+}
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 71a93d1..f206252 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -36,7 +36,6 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.QuickstepTransitionManager;
-import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimatorListeners;
 import com.android.launcher3.anim.PendingAnimation;
@@ -67,10 +66,6 @@
 
     private final BaseQuickstepLauncher mLauncher;
 
-    private final TaskbarActivityContext mContext;
-    private final TaskbarDragLayer mTaskbarDragLayer;
-    private final TaskbarView mTaskbarView;
-
     private final AnimatedFloat mIconAlignmentForResumedState =
             new AnimatedFloat(this::onIconAlignmentRatioChanged);
     private final AnimatedFloat mIconAlignmentForGestureState =
@@ -157,12 +152,7 @@
                 }
             };
 
-    public LauncherTaskbarUIController(
-            BaseQuickstepLauncher launcher, TaskbarActivityContext context) {
-        mContext = context;
-        mTaskbarDragLayer = context.getDragLayer();
-        mTaskbarView = mTaskbarDragLayer.findViewById(R.id.taskbar_view);
-
+    public LauncherTaskbarUIController(BaseQuickstepLauncher launcher) {
         mLauncher = launcher;
     }
 
@@ -217,7 +207,8 @@
     @Override
     protected void updateContentInsets(Rect outContentInsets) {
         int contentHeight = mControllers.taskbarStashController.getContentHeight();
-        outContentInsets.top = mTaskbarDragLayer.getHeight() - contentHeight;
+        TaskbarDragLayer dragLayer = mControllers.taskbarActivityContext.getDragLayer();
+        outContentInsets.top = dragLayer.getHeight() - contentHeight;
     }
 
     /**
@@ -343,15 +334,15 @@
      * @return Whether any Taskbar item could handle the given MotionEvent if given the chance.
      */
     public boolean isEventOverAnyTaskbarItem(MotionEvent ev) {
-        return mTaskbarView.isEventOverAnyItem(ev);
+        return mControllers.taskbarViewController.isEventOverAnyItem(ev);
     }
 
     public boolean isDraggingItem() {
-        return mContext.getDragController().isDragging();
+        return mControllers.taskbarDragController.isDragging();
     }
 
     public View getRootView() {
-        return mTaskbarDragLayer;
+        return mControllers.taskbarActivityContext.getDragLayer();
     }
 
     private void setIconAlpha(LauncherState state, float progress) {
@@ -418,7 +409,8 @@
     @Override
     public void onTaskbarIconLaunched(WorkspaceItemInfo item) {
         InstanceId instanceId = new InstanceIdSequence().newInstanceId();
-        mLauncher.logAppLaunch(mContext.getStatsLogManager(), item, instanceId);
+        mLauncher.logAppLaunch(mControllers.taskbarActivityContext.getStatsLogManager(), item,
+                instanceId);
     }
 
     private final class TaskBarRecentsAnimationListener implements RecentsAnimationListener {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java
index 10a5b89..05b0a11 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarDragLayerController.java
@@ -62,8 +62,11 @@
     public void init(TaskbarControllers controllers) {
         mControllers = controllers;
         mTaskbarDragLayer.init(new TaskbarDragLayerCallbacks());
+
+        mBgTaskbar.value = 1;
         mKeyguardBgTaskbar.value = 1;
         mBgOverride.value = 1;
+        updateBackgroundAlpha();
     }
 
     public void onDestroy() {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
index 5bedf87..92cee04 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
@@ -39,14 +39,17 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.SettingsCache;
 import com.android.launcher3.util.SimpleBroadcastReceiver;
+import com.android.quickstep.RecentsActivity;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SysUINavigationMode.Mode;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TouchInteractionService;
+import com.android.systemui.unfold.UnfoldTransitionProgressProvider;
 import com.android.systemui.unfold.util.ScopedUnfoldTransitionProgressProvider;
 
 /**
@@ -71,7 +74,7 @@
             new ScopedUnfoldTransitionProgressProvider();
 
     private TaskbarActivityContext mTaskbarActivityContext;
-    private BaseQuickstepLauncher mLauncher;
+    private StatefulActivity mActivity;
     /**
      * Cache a copy here so we can initialize state whenever taskbar is recreated, since
      * this class does not get re-initialized w/ new taskbars.
@@ -149,25 +152,50 @@
     }
 
     /**
-     * Sets a launcher to act as taskbar callback
+     * Sets a {@link StatefulActivity} to act as taskbar callback
      */
-    public void setLauncher(@NonNull BaseQuickstepLauncher launcher) {
-        mLauncher = launcher;
-        mUnfoldProgressProvider.setSourceProvider(launcher
-                .getUnfoldTransitionProgressProvider());
+    public void setActivity(@NonNull StatefulActivity activity) {
+        mActivity = activity;
+        mUnfoldProgressProvider.setSourceProvider(getUnfoldTransitionProgressProviderForActivity(
+                activity));
 
         if (mTaskbarActivityContext != null) {
             mTaskbarActivityContext.setUIController(
-                    new LauncherTaskbarUIController(launcher, mTaskbarActivityContext));
+                    createTaskbarUIControllerForActivity(mActivity));
         }
     }
 
     /**
-     * Clears a previously set Launcher
+     * Returns an {@link UnfoldTransitionProgressProvider} to use while the given StatefulActivity
+     * is active.
      */
-    public void clearLauncher(@NonNull BaseQuickstepLauncher launcher) {
-        if (mLauncher == launcher) {
-            mLauncher = null;
+    private UnfoldTransitionProgressProvider getUnfoldTransitionProgressProviderForActivity(
+            StatefulActivity activity) {
+        if (activity instanceof BaseQuickstepLauncher) {
+            return ((BaseQuickstepLauncher) activity).getUnfoldTransitionProgressProvider();
+        }
+        return null;
+    }
+
+    /**
+     * Creates a {@link TaskbarUIController} to use while the given StatefulActivity is active.
+     */
+    private TaskbarUIController createTaskbarUIControllerForActivity(StatefulActivity activity) {
+        if (activity instanceof BaseQuickstepLauncher) {
+            return new LauncherTaskbarUIController((BaseQuickstepLauncher) activity);
+        }
+        if (activity instanceof RecentsActivity) {
+            return new FallbackTaskbarUIController((RecentsActivity) activity);
+        }
+        return TaskbarUIController.DEFAULT;
+    }
+
+    /**
+     * Clears a previously set {@link StatefulActivity}
+     */
+    public void clearActivity(@NonNull StatefulActivity activity) {
+        if (mActivity == activity) {
+            mActivity = null;
             if (mTaskbarActivityContext != null) {
                 mTaskbarActivityContext.setUIController(TaskbarUIController.DEFAULT);
             }
@@ -192,10 +220,11 @@
 
         mTaskbarActivityContext = new TaskbarActivityContext(mContext, dp.copy(mContext),
                 mNavButtonController, mUnfoldProgressProvider);
+
         mTaskbarActivityContext.init(mSharedState);
-        if (mLauncher != null) {
+        if (mActivity != null) {
             mTaskbarActivityContext.setUIController(
-                    new LauncherTaskbarUIController(mLauncher, mTaskbarActivityContext));
+                    createTaskbarUIControllerForActivity(mActivity));
         }
     }
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
index d14622b..08d2a06 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
@@ -254,6 +254,14 @@
     }
 
     /**
+     * Returns whether the given MotionEvent, *in screen coorindates*, is within any Taskbar item's
+     * touch bounds.
+     */
+    public boolean isEventOverAnyItem(MotionEvent ev) {
+        return mTaskbarView.isEventOverAnyItem(ev);
+    }
+
+    /**
      * Callbacks for {@link TaskbarView} to interact with its controller.
      */
     public class TaskbarViewCallbacks {
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index ec9a325..cf06036 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -52,6 +52,7 @@
 import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.statemanager.BaseState;
 import com.android.launcher3.statemanager.StatefulActivity;
+import com.android.launcher3.taskbar.TaskbarUIController;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.WindowBounds;
 import com.android.launcher3.views.ScrimView;
@@ -138,6 +139,9 @@
         return null;
     }
 
+    @Nullable
+    public abstract TaskbarUIController getTaskbarController();
+
     public final boolean isResumed() {
         ACTIVITY_TYPE activity = getCreatedActivity();
         return activity != null && activity.hasBeenResumed();
diff --git a/quickstep/src/com/android/quickstep/FallbackActivityInterface.java b/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
index 4df1aad..ffdfa43 100644
--- a/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/FallbackActivityInterface.java
@@ -21,6 +21,8 @@
 import static com.android.quickstep.fallback.RecentsState.DEFAULT;
 import static com.android.quickstep.fallback.RecentsState.HOME;
 
+import android.animation.Animator;
+import android.animation.AnimatorSet;
 import android.content.Context;
 import android.graphics.Rect;
 import android.view.MotionEvent;
@@ -29,7 +31,9 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.statemanager.StateManager;
+import com.android.launcher3.taskbar.FallbackTaskbarUIController;
 import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.quickstep.GestureState.GestureEndTarget;
 import com.android.quickstep.fallback.RecentsState;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
@@ -102,6 +106,15 @@
         return RecentsActivity.ACTIVITY_TRACKER.getCreatedActivity();
     }
 
+    @Override
+    public FallbackTaskbarUIController getTaskbarController() {
+        RecentsActivity activity = getCreatedActivity();
+        if (activity == null) {
+            return null;
+        }
+        return activity.getTaskbarUIController();
+    }
+
     @Nullable
     @Override
     public RecentsView getVisibleRecentsView() {
@@ -182,7 +195,7 @@
     }
 
     @Override
-    public RecentsState stateFromGestureEndTarget(GestureState.GestureEndTarget endTarget) {
+    public RecentsState stateFromGestureEndTarget(GestureEndTarget endTarget) {
         switch (endTarget) {
             case RECENTS:
                 return DEFAULT;
@@ -203,6 +216,28 @@
     }
 
     @Override
+    public @Nullable Animator getParallelAnimationToLauncher(GestureEndTarget endTarget,
+            long duration, RecentsAnimationCallbacks callbacks) {
+        FallbackTaskbarUIController uiController = getTaskbarController();
+        Animator superAnimator = super.getParallelAnimationToLauncher(
+                endTarget, duration, callbacks);
+        if (uiController == null) {
+            return superAnimator;
+        }
+        RecentsState toState = stateFromGestureEndTarget(endTarget);
+        Animator taskbarAnimator = uiController.createAnimToRecentsState(toState, duration);
+        if (taskbarAnimator == null) {
+            return superAnimator;
+        }
+        if (superAnimator == null) {
+            return taskbarAnimator;
+        }
+        AnimatorSet animatorSet = new AnimatorSet();
+        animatorSet.playTogether(superAnimator, taskbarAnimator);
+        return animatorSet;
+    }
+
+    @Override
     protected int getOverviewScrimColorForState(RecentsActivity activity, RecentsState state) {
         return state.getScrimColor(activity);
     }
diff --git a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
index b0bd747..aa9435b 100644
--- a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
@@ -187,7 +187,8 @@
     }
 
     @Nullable
-    private LauncherTaskbarUIController getTaskbarController() {
+    @Override
+    public LauncherTaskbarUIController getTaskbarController() {
         BaseQuickstepLauncher launcher = getCreatedActivity();
         if (launcher == null) {
             return null;
diff --git a/quickstep/src/com/android/quickstep/RecentsActivity.java b/quickstep/src/com/android/quickstep/RecentsActivity.java
index 03e2395..ad7e4df 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivity.java
@@ -60,6 +60,8 @@
 import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
 import com.android.launcher3.statemanager.StateManager.StateHandler;
 import com.android.launcher3.statemanager.StatefulActivity;
+import com.android.launcher3.taskbar.FallbackTaskbarUIController;
+import com.android.launcher3.taskbar.TaskbarManager;
 import com.android.launcher3.util.ActivityOptionsWrapper;
 import com.android.launcher3.util.ActivityTracker;
 import com.android.launcher3.util.RunnableList;
@@ -73,6 +75,7 @@
 import com.android.quickstep.fallback.RecentsState;
 import com.android.quickstep.util.RecentsAtomicAnimationFactory;
 import com.android.quickstep.util.SplitSelectStateController;
+import com.android.quickstep.util.TISBindHelper;
 import com.android.quickstep.views.OverviewActionsView;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
@@ -101,6 +104,9 @@
     private ScrimView mScrimView;
     private FallbackRecentsView mFallbackRecentsView;
     private OverviewActionsView mActionsView;
+    private TISBindHelper mTISBindHelper;
+    private @Nullable TaskbarManager mTaskbarManager;
+    private @Nullable FallbackTaskbarUIController mTaskbarUIController;
 
     private Configuration mOldConfig;
 
@@ -125,6 +131,21 @@
                 new SplitSelectStateController(mHandler, SystemUiProxy.INSTANCE.get(this));
         mDragLayer.recreateControllers();
         mFallbackRecentsView.init(mActionsView, controller);
+
+        mTISBindHelper = new TISBindHelper(this, this::onTISConnected);
+    }
+
+    private void onTISConnected(TouchInteractionService.TISBinder binder) {
+        mTaskbarManager = binder.getTaskbarManager();
+        mTaskbarManager.setActivity(this);
+    }
+
+    public void setTaskbarUIController(FallbackTaskbarUIController taskbarUIController) {
+        mTaskbarUIController = taskbarUIController;
+    }
+
+    public FallbackTaskbarUIController getTaskbarUIController() {
+        return mTaskbarUIController;
     }
 
     @Override
@@ -346,6 +367,11 @@
         super.onDestroy();
         ACTIVITY_TRACKER.onActivityDestroyed(this);
         mActivityLaunchAnimationRunner = null;
+
+        mTISBindHelper.onDestroy();
+        if (mTaskbarManager != null) {
+            mTaskbarManager.clearActivity(this);
+        }
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index ddcf34c..1516b7a 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -459,6 +459,12 @@
         } else {
             am.unregisterSystemAction(SYSTEM_ACTION_ID_ALL_APPS);
         }
+
+        StatefulActivity newOverviewActivity = mOverviewComponentObserver.getActivityInterface()
+                .getCreatedActivity();
+        if (newOverviewActivity != null) {
+            mTaskbarManager.setActivity(newOverviewActivity);
+        }
     }
 
     @UiThread
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
index 4895b10..710afe0 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
@@ -43,6 +43,7 @@
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -288,6 +289,7 @@
 
     @Test
     @PortraitLandscape
+    @Ignore("b/203781041")
     public void testOverviewForTablet() throws Exception {
         if (!mLauncher.isTablet()) {
             return;