OTA guide for both US and Canada (CBC) at the same time?

Thinking about getting a Tivo for my mother, who lives in Ann Arbor Michigan.



She gets (and enjoys) stations from both US (Detroit, Lansing, Toledo) and Canada (CBC Windsor)



Anyone from that area can you confirm the Tivo guide will integrate both CBC and all the US channels in one guide?



How accurate does the OTA guide tend to be?



Thanks, I've only ever had Tivo on cable so haven't used OTA yet.