Hi @regex.sh can you show your actual code? In principle this should work just fine, but the devil is in the details of how your subscriptions and broadcasts are done.

but the devil is in the details of how your subscriptions and broadcasts are done.

Yup, devil was in the detail
I subscribed to topic outside “join” callback (I have send() for :after_join)
It now requires me to implement handle_out, which I did and push is working

Is handle_out normal for this sort of thing?

Current code (it’s currently WIP, so don’t judge haha)
I had subscribe in handle_info prior to this

def join("live-chat:room:" <> guest_id, %{"platformId" => platform_id}, socket) do
  GuestChat.subscribe("live-chat:room:" <> guest_id)
  send(self(), {:join_room, platform_id, guest_id})
  {:ok, socket |> assign(:guest_id, guest_id)}
end

def handle_info({:join_room, platform_id, guest_id}, socket) do
  GuestChat.broadcast("live-chat:room:" <> guest_id, "new_guest", %{uid: guest_id})
  Presence.track(socket, "live-chat:room:" <> guest_id, %{guest_id: guest_id, platform_id: platform_id})
  {:noreply, socket}
end