I tried calling myself to test the watch notification functionality. My watch wont get notifications the first time I call. If I call again immediately after, it notifies with a delay. If I wait 1 minute and call myself, same thing, no notification. If I do it immediately after , I do get it. So it’s taking 2 calls within a minute for the watch to finally ring. And even if it does, there’s a delay in getting the notification.
My watch is a Ticwatch S running wearOS 2.12, phone is a Samsung GalaxyS10 running Android 10