Yes, you can do this. It's called padding.
The recording options let you start a program early and/or end a program late.
If this is for a season pass, then you want to do this from the season pass manager.
The drawback is if you have a lot of back to back recordings. Some might be canceled due to conflicts. You can minimize this by going to the recording menu under settings and enable clipping.
With clipping enabled, the Tivo will still record the conflicting program, but the beginning and/or end of the recording will be clipped.
It's a give and take situation if you have a lot of back to back recordings. You sacrifice some recordings so that your favorites are complete.
The season pass priority plays a part in determining which shows will be clipped.
Hope this helps.
The Man Prayer: I'm a man ...... I can change ...... If I have to ...... I guess.