I am getting ready to order a 622 and 525 PVR. My question coming from a HD Tivo from Direct. In two tv mode or what ever you call it can i have tv1 playing one channel and the other tv2 playing another will i be able to have a two channel buffer on tv2 where i can switch back and forth between two stations and have the 1/2 hr buffer or do i have to run it in single mode for this to happen?