Good question. I don't think Montana has to provide a similiar practice facility. However, the rules are different on game day.I never thought of it until now, but if the Griz practice indoors on Friday, do we have to offer the bubble to the visitors for a couple of hours? If the Griz have heated benches they have to be offered to the visitors logic.
For example, when the Griz played at Wyoming in 2014, there was a long weather delay. The Cowboys went to their indoor practice facility, kept limber and practiced. The Griz, meanwhile, were stuck in their locker room. Once the refs figured out what was going on, they made Wyoming give the Griz practice time before the game resumed.
Craig Bohl at his finest, right there.