I never said it communicated with the headend over the Ethernet, I know how cable devices communicate with the headend, obviously, it's over the coax.
My point was, that the TiVo has USB ports and Ethernet, while his TV doesn't, which makes it incapable of having a dongle of any kind to allow SDV with CableCard. And somehow he was blaming TiVo for the make of his TV.
