Not sure if this would work so thought I would ask. Right now I have a 722 upstairs at my HD TV. TV2 is downstairs in the playroom on Ch73. If I got a second 722 could I put that downstairs and do the following: 1. 722 upstairs feeding HD to upstairs HDTV and TV2 to downstairs SD TV 2. 722 downstairs feeding HD (SD downconverted) to downstairs SD TV and TV2 feeding SD to upstairs HD TV There is only one coax coming into each room so I don't know if I would have to split it or something. Basically I want more DVR space but be able to watch programs on both 722s in both locations. 722 downstairs would have a bunch of kids movies we watch upstairs sometimes for "movie" night.