It appears when you attempt to connect to a channel that actually isn't running interactive, the CDK goes into a weird state where it never can connect to that channel again unless you restart
Steps to Repro:
Don't have a Game Client running
Run On My Computer
Notice it hangs because there is no game client running.
(At this point, if you start a game client, it still won't connect)
Steps to Repro:
(At this point, if you start a game client, it still won't connect)