diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
index 2796340c598f5..5c72731e71a73 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
@@ -875,6 +875,7 @@ public class NotifCollection implements Dumpable, PipelineDumpable {
                 && !hasFlag(entry, Notification.FLAG_ONGOING_EVENT)
                 && !hasFlag(entry, Notification.FLAG_BUBBLE)
                 && !hasFlag(entry, Notification.FLAG_NO_CLEAR)
+                && (entry.getChannel() == null || !entry.getChannel().isImportantConversation())
                 && entry.getDismissState() != DISMISSED;
     }
 
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
index 540bda6ea9dc3..9037df821ca80 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
@@ -1674,12 +1674,22 @@ public class NotifCollectionTest extends SysuiTestCase {
         verifyNoMoreInteractions(mStatusBarService);
     }
 
+    @Test
+    public void testCanDismissOtherNotificationChildren() {
+        // GIVEN an ongoing notification
+        final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
+                .build();
+
+        // THEN its children are dismissible
+        assertTrue(mCollection.shouldAutoDismissChildren(
+                container, container.getSbn().getGroupKey()));
+    }
+
     @Test
     public void testCannotDismissOngoingNotificationChildren() {
         // GIVEN an ongoing notification
         final NotificationEntry container = new NotificationEntryBuilder()
-                .setPkg(TEST_PACKAGE)
-                .setId(47)
                 .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_ONGOING_EVENT, true)
                 .build();
@@ -1693,6 +1703,7 @@ public class NotifCollectionTest extends SysuiTestCase {
     public void testCannotDismissNoClearNotifications() {
         // GIVEN an no-clear notification
         final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_NO_CLEAR, true)
                 .build();
 
@@ -1701,12 +1712,26 @@ public class NotifCollectionTest extends SysuiTestCase {
                 container, container.getSbn().getGroupKey()));
     }
 
+    @Test
+    public void testCannotDismissPriorityConversations() {
+        // GIVEN an no-clear notification
+        NotificationChannel channel =
+                new NotificationChannel("foo", "Foo", NotificationManager.IMPORTANCE_HIGH);
+        channel.setImportantConversation(true);
+        final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
+                .setChannel(channel)
+                .build();
+
+        // THEN its children are not dismissible
+        assertFalse(mCollection.shouldAutoDismissChildren(
+                container, container.getSbn().getGroupKey()));
+    }
+
     @Test
     public void testCanDismissFgsNotificationChildren() {
         // GIVEN an FGS but not ongoing notification
         final NotificationEntry container = new NotificationEntryBuilder()
-                .setPkg(TEST_PACKAGE)
-                .setId(47)
                 .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_FOREGROUND_SERVICE, true)
                 .build();