The March 15th thing isn’t a hard rule, just so everyone knows. The AAMC website clearly states that they’re guidelines, and “These guidelines are not intended to supersede the policies, timelines, or discretion of the individual schools or programs”.
https://www.aamc.org/services/admi... 15 of the,those acceptance actions to AMCAS.
Hopefully that helps some of you feel a bit better, but the reality is there’s two distinct waves. Buffalo has made no mention that a first-pass interview/acceptance trumps a second-rounder, so there is no basis to believe that any of you are interviewing for waitlist spots, it’s all completely speculation.