When I had Directv installed, the HD DVRs needed two RG-6 cables ran from the satellite to the receiver in order to be able to record 2 different shows and such. Now I am getting a Dish Network installed. I was told that the Dish HD DVRs (722 and 612) don't need two cables ran from the satellite. I was told they only need a single cable, and that you can still record two shows at once or watch one and record another. Is that true? If so, why does D* need two cables from satellite while E* only needs one? Does anyone know the reason? Or am I getting told the completely wrong information.