Teamviewer on Android - Detect if there is a session

We already do some TeamViewer APK stuff. But its all calls back to the TV server for things like status and list of ids etc. And I didn't write that, it was another developer on another team in another office.

I need something simpler and local. I just need to know if there is a remote user connected. That's it. Simple bool. Is there a remote session currently in progress on this android tablet?

Seems that should be really straight forward. At most is there an Android broadcast message that happens when a connection is established and again when killed?