I have a question about setting up Whole Home DVR in unsupported mode. What I would like to do is connect my H21 to a router in the basement via ethernet. My HR21 would be connected to an AirPort Extreme via ethernet, the AirPort Extreme would be connected to the router in the basement via ethernet. Is this going to give me the connectivity I need or do both DirecTV boxes need to be connected directly to the router, or directly to the AirPort Extreme? Thanks.