My TV is pre-ARC, so it's an optical input for the audio. 3313 switches fine to the audio, but the video on the TV remains on the HDMI input from the receiver vice switching to its antenna/cable input ... I can select "input" on the AVR remote (it's in the TV control mode) and then select the proper input, but it's not an automatic switch on the TV. The Harmony remote works just fine, it's been programmed to switch the TV input and Rx to TV audio when I select the appropriate command. None of my other inputs need the TV to switch inputs ... everything is switched by the Rx (Blu-ray, Apple TV, Computer input) 3 HDMI in, one out. It would seem the Denon remote would have to perform macros, which it doesn't do. Only way I can see this might happen is if HDMI control switches the TV input ... which it doesn't apparently do. Interesting in that the blu ray, when connected via its own HDMI directly to the TV (older Rx with no HDMI switching), would switch the TV to the appropriate HDMI input when I powered it on.