This was the crux of my posts in post #9 and #12, with the Op going out and renting a model Y as a replacement vehicle (and seemingly expecting that to be completely covered by the other insurance, etc). If that vehicle is above their own rental car daily limits (for example), they are going to end up with some charges it appears they do not currently expect.
I also dont know how the OPs state assigns blame on these type of things, etc.
I am just hoping that OP, who is a regular, active, member of this community, ends up with a result that makes sense for them, and without a bunch of charges they dont expect.