I was under the impression they entered at the closest entrance from Rexburg which would be 90 so minutes north in Montana which is only different because it technically has 26 residents total in the YS park area but that’s slim pickings to make a pool on top of the judicial technicalities.
As for this being talked about previously, forgive me for not having been able to read every post on this site, i meant in the 1000’s of videos/articles about the case. I can’t find a single mention of the possibility of this being relevant. No need to be condescending.
I apologize, but this exact thing has come up and been discussed multiple times. You were sure this was something new based on your message. It isn't.
The biggest issue is that from where we think they entered Yellowstone (the entrance you mentioned in West Yellowstone, MT) there is no way to drive into the part of Idaho that is in the park. In fact, the closest that road would put you to the area of Idaho they needed to be in would involve a long, difficult hike. There are roads that go into or close to the park that could cut the hike to an easy mile or two at the most, and are closer to Rexburg than West Yellowstone. If they truly were aiming for the Idaho portion of the park they missed it on the trip with Tylee and did a poor job of researching even the most basic part of the idea, how to get to the part of the park they needed to.
We had multiple attorneys discuss bigger problems with this theory, but the fact remains, just the logistics of ending up in that part of the park based on knowing they entered from one of the main entrances that have cameras makes this idea a non-starter.