I checked the FAQs and stickies on receiver comparisons and it wasn't clear if this was or wasn't supported. Do 2 tuner DVRs provide the ability to watch by tuner source by room? Today with Dish, I have the following 4 room setup: HD dual tuner ViP 622 -- sends one HD tuner to one room, SD out to another room. SD single tuner 508 -- single tuner From what I can read, it doesn't appear that any of the DirecTV boxes provide the capability to "split" tuners by output source. Example: CBS is being taped on tuner 1, and ABC is being taped on tuner 2, TV1 has 4 choices for viewing: 1. watch a prerecorded show 2. watch what is being taped on Tuner 1 (from the recording) 3. watch what is being taped on Tuner 2 (live or can be paused to watch later). 4. watch OTA channel (TV2 cannot watch OTA) I believe if I want DVR capabilities like this that I need a box for each room, correct?