Got a non-convertible waitlist after an absolutely stellar interview (IIMK)

9/9/9 Profile, 99+%ile, 2.5 years work ex. Had the craziest interview, answered everything spot on and could see the panellists were visibly impressed by the depth of answers. We even shared some casual banter and they were laughing (in a positive way) the entire time.

Got waitlisted at 428 Gen lmao. Not even sad but just find this hilarious. Even the WAT was near perfect as per me. Required a CS of 30/55 to convert in the first list.

How does this happen lol