My Apple TV is connected via an ethernet cable. Tonight I was trying to use the remote app on my iPhone to control the Apple TV and it showed me that the Apple TV was "offline". I later discovered that if I switched my iPhone from "ournetwork=5G" (not the actual name of course) to "our network-2.4G" it worked. Not sure why that would have a bearing on the ethernet cable connected Apple TV and can't find a setting on it that may influence that. Any suggestions?