I have an HD DVR with two coax inputs. The input cables are on separate wallplates, two studs apart. It was this way when I moved in 5 years ago. It has not been a problem previously because I have a TV stand that covers the jacks, but now I am planning to put the TV on a wall mount and get rid of the TV stand, and set the DVR on a wall-mounted shelf. I don't want to see the cables going from the wall to the receiver, so I would like to install a new wallplate close to the shelf with dual coax connectors. Is there any reason I couldn't hook both cables to the same wallplate? If not, why wouldn't they have done this on the original installation?