Really neat solution 👏. I just didn't understood one thing here that why we need both postAtFrontOfQueue() & post()? Wouldn't just post() do the trick for us like shown below? 🤔 With or without postAtFrontOfQueue() we essentially want to call posted.complete(Unit) at the end of the main thread queue. Choreographer.getInstance().postFrameCallback { handler.post { posted.complete(Unit) } }