Neil bought a Harmony Hub for his home theater. He streams with Apple TV and a FireTV stick and he's having trouble running Netflix through it. Leo says to make sure the Hub is set to input 4, the TV is set to input 1, and then pair the Harmony app with Apple TV. It could be a limitation of Apple TV that the Harmony can't hook into the audio interface. The only device that would allow him to launch channels through the Harmony Hub is Roku.