On August 8, 2019 at 11:46, ichbinbose said...
Get a normal Comcast dvr open it up and take the cable card out. Then call and get it paired to the Tivo. Return Comcast box with crappy card.
I have no idea if that works but it might be worth trying
You know I have thought about that many times. But cable boxes don't require the M-Card that the TiVo unit does. The cable boxes I took the cable card out to check, were all S-cards. At least around here. (single-stream vs. multi-stream).