I have a motorola comcast digital cable box, a dvd recorder, and a tivo dvr. I was able to record tivo before and switch to video on the tv and continue to watch digital cable without effecting what tv was recording. Since I moved the set up I can no longer get this to work. I have all three hooked up and get video, but its all or nothing. when i change the channel it changes what is on all three devices. So now I either record what im watching on tivo or record what im watching on dvd and I am stuck watching whatever is being recorded