I use Channels on a number of TV's throughout my house. I also installed the Channels app on my Android device.
I don't know if it had been intentional or not; but the Channels app, used to support channel changes on other Channels devices when tapping on the channel logo on the program grid.
This functional has been hit-or-miss for the last two months or so. Sometimes the "play on devices" menu would appear, sometimes it wouldn't. It appears recently that this feature may now be gone.
This was not a "need to have feature", but it was a pretty awesome "nice to have feature."
Are there any plans to reintroduce this feature to the Android app?