The signal is encrypted as all digital cable signals are. The TV would see nothing.Mind if I ask what the setup is like, does it require a TA? How as the Cable Card setup? Is the coax connected directly to the TiVo only, can a splitter be used to direct connect to the TV as if was a clear QAM signal?
MANY years ago, I had a JVC DiLA HD set that had a cable card slot. I got one from Spectrum, and it worked great. Those were early days (like about 18 years ago).