re: TiVo, could be, I think that's essentially how it worked with an old STB so it's possible.
At another location, we may keep the HD TiVo active (for OTA). The old Series 2 isn't worth paying a monthly fee for, but one has a lifetime service so any use is better than no use.
re: AT&T, I saw a cute commercial for the wireless, the kid talking to his grandfather about even younger kids and how they didn't appreciate the flexibility of a U-Verse wireless. I was expecting more of a "back to when we had rabbit ears" but that may be too old for most of the audience.
But as I recall from not paying much attention, wasn't that wireless from the PVR to the TV?
I do hope there's a wireless solution, either from Bell or as a workaround for wired boxes.