It seems like, depending where you are, the Home button (on the TCL Netflix/Youtube controller) will actually take you back a screen or two, but not necessarily to the actual Home screen.
For instance, it might take you to the Search, Discover, or Apps screen, but not necessarily the 'Home' screen -- unless you hit the Home button again, in which case you will be taken to the Home screen -- if you were not there already.
Do I have this correct?
I was starting to think the Home screen was really a set of screens, based on the Home button not actually always taking you to the Home screen, but now I'm thinking it's just an intentional quirk of the controller function, and there really is only one Home screen.