Um.... I have a Series 2 Tivo, and my cable box has a digital tuner. However, a) I don't think you get fractional channels unless you have
HDTV, not just digital. Us poor peons without HDTV only have INTEGER channels!

It's a good thing you must have HDTV, because I think you just invited me over to watch the Super Bowl! ROTFLMAO!
And b), since it apparently wasn't shown on Channel 11 yet, it couldn't be
rebroadcast. As far as I can tell, the first broadcast is on the 1st, with a rebroadcast on the 3rd. The Tivo website is just where I did my search; it could have as well been tvguide.com, and has nothing to do with being able to bring in the channel.
So, for those who haven't seen it yet, you likely still have a chance, either on your regular channels or on HDTV subchannels.