I’m looking at getting a new tv and soundbar , just started looking , I have therefore come across this hdmi arc , I would have just connected by optical but this hdmi arc looks useful in that it will switch the soundbar and tv off at the same time . At the moment I have loads of devices under my tv ...ps3 wii blue ray , free view box , karaoke , android ... these connect to tv via 2 hdmi switch boxes , so the question is will the sound from any of these devices come out of my soundbar if I connect the tv to it by hdmi arc , ie if I am using hdmi 2 as my source but the soundbar is connected to hdmi 1 ?