Right now, I have my DVD player connected to the TV via HMDI and the TV connected to the receiver via RCA cables. The following may seem as a stupid question to many of you, but keep in mind that I'm a complete noob when it comes to video/audio equipment, so please bear with me if you can. So my question is: with the set up that I have right now, does the TV act as a "pass through", thereby allowing sound output from the DVD player to be processed by the receiver, or does the TV utilize its own internal audio processing circuits and simply use the receiver as a speaker hub?
Also, my receiver has HDMI pass through, but it's only 1080i. I have a 1080p upconverting DVD player and a 1080p TV. If I plug the DVD player into the receiver, does it mean that the 1080p signal will be downgraded to 1080i?