Is that even possible timewise?
Iirc it was said that ride would take more than 7 minutes.
I also remember reading that the surveillance camera might've been off by 8 minutes. I believe it was in an interview w/the owner of one of the stores. I'll try to find it again. If so... take the timestamp of 12:11 (I have to think 12:15 was a "round estimate" that they originally used). Subtract 8 minutes and we're talking 12:03. Add 8 minutes and we're talking 12:19. I can't remember which way they said the clock was off.
If the 12:20ish sighting that had not been confirmed by LE is accurate, 12:03 seems difficult but possible. 12:19 obviously impossible. Of course 12-anything to the official LE timeline of 3:58 is a much larger window.