I already know that the new 4th gen has a sleep mode. My question though has to do with the functionality of my harmony 665 and the apple tv. So when I press the function key that turns on all devices needed to watch apple tv(one my Logitech Harmony 665) they all turn on minus the apple tv. I have to use the apple tv remote to get it to come on. Once it's on the Harmony 665 remote controls the functionality of the Apple tv(ie, selecting apps, Netflix, play, menu, setting etc.). When I want to put it into sleep, the Harmony 665 doesn't put the Apple Tv into sleep. I have to again use the Apple Tv remote. My older Apple TV didn't have this issue. Is this a problem with the newer Apple TV and the Logitech Harmony 665 remote? All I want to know is if it won't work, is this an issue with Apple that they have to correct allowing the newer Apple Tv to function with other devices or is it something I am doing?