diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt
index ac8d998f3..a6af8229c 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt
@@ -914,6 +914,20 @@ object LocalCache : ILocalCache, ICacheProvider {
                 event.tagsWithoutCitations().mapNotNull { checkGetOrCreateNote(it) }
             }
 
+            is ChatEvent -> {
+                // Amethyst's own kind:9 replies carry the parent as a NIP-18
+                // `q` tag (see ChatEvent.replyingTo), but the broader Marmot
+                // ecosystem — WhiteNoise in particular — threads kind:9 chats
+                // with a plain NIP-10 `e` tag. Accept both so inbound replies
+                // from either client show their quote bubble in the feed.
+                val eTagTargets =
+                    event.tags
+                        .filter { it.size > 1 && it[0] == "e" }
+                        .map { it[1] }
+                val qTagTargets = event.quotedEvents().map { it.eventId }
+                (eTagTargets + qTagTargets).mapNotNull { checkGetOrCreateNote(it) }
+            }
+
             else -> {
                 emptyList()
             }
diff --git a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/marmotGroups/MarmotGroupList.kt b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/marmotGroups/MarmotGroupList.kt
index db34fd791..5e622ead4 100644
--- a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/marmotGroups/MarmotGroupList.kt
+++ b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/marmotGroups/MarmotGroupList.kt
@@ -47,6 +47,7 @@ class MarmotGroupList(
         nostrGroupId: HexKey,
         msg: Note,
     ) {
+        if (!isDisplayableFeedMessage(msg)) return
         val chatroom = getOrCreateGroup(nostrGroupId)
         val isSelfAuthored = msg.author?.pubkeyHex == ownerPubKey
         // Use the quiet path for our own messages so the relay round-trip
@@ -74,6 +75,7 @@ class MarmotGroupList(
         nostrGroupId: HexKey,
         msg: Note,
     ) {
+        if (!isDisplayableFeedMessage(msg)) return
         val chatroom = getOrCreateGroup(nostrGroupId)
         if (chatroom.restoreMessageSync(msg)) {
             noteToGroupIndex.getOrCreate(msg.idHex) { nostrGroupId }
@@ -135,4 +137,27 @@ class MarmotGroupList(
         rooms.forEach { key, _ -> result.add(key) }
         return result
     }
+
+    /**
+     * True if this inner event should appear as its own bubble in the group
+     * chat feed. Side-channel kinds (reactions, deletions) must still be
+     * consumed into LocalCache — they drive the reaction row on the target
+     * note and, for kind:5, revoke a prior reaction — but they must NOT show
+     * up as standalone messages.
+     *
+     * Needed because WhiteNoise emits plain kind:7 reactions (emoji content +
+     * `e` tag) and kind:5 unreacts inside kind:445, and the Marmot pipeline
+     * blindly routed every inner event into the chatroom. The reaction then
+     * rendered as a chat bubble containing just the emoji, with a quoted
+     * citation of the target message — which reads exactly like a reply.
+     */
+    private fun isDisplayableFeedMessage(msg: Note): Boolean {
+        val kind = msg.event?.kind ?: return true
+        return kind != MARMOT_INNER_KIND_REACTION && kind != MARMOT_INNER_KIND_DELETION
+    }
+
+    companion object {
+        private const val MARMOT_INNER_KIND_DELETION = 5
+        private const val MARMOT_INNER_KIND_REACTION = 7
+    }
 }
diff --git a/tools/marmot-interop/marmot-interop.sh b/tools/marmot-interop/marmot-interop.sh
index 876572cd6..4674fbe0c 100755
--- a/tools/marmot-interop/marmot-interop.sh
+++ b/tools/marmot-interop/marmot-interop.sh
@@ -776,7 +776,11 @@ test_09_reply_react_unreact() {
   fi
 
   step "B replies to the anchor"
-  wn_b messages send "$gid" "replying via wn" --reply_to "$msg_id" >/dev/null 2>&1 || true
+  # clap v4 converts snake_case fields to kebab-case flags by default, so the
+  # `reply_to: Option<String>` field on `wn messages send` exposes as
+  # `--reply-to`. Passing `--reply_to` is silently rejected (the script's
+  # `|| true` hides the error) and the reply is never actually published.
+  wn_b messages send "$gid" "replying via wn" --reply-to "$msg_id" >/dev/null 2>&1 || true
   sleep 3
   if confirm "Does Amethyst show 'replying via wn' as a threaded reply to the anchor?"; then
     record_result "09 reply/react" pass