@Steven_D while it’s nice to see more interaction by Zwift staff, time gap issues have been a known issue for almost a year now that can easily be verified by searching “time gaps” in the forum search. It appears no follow up has happened since July 21.
See: Riders Nearby time gaps are way off in event [July 2021] - #4 by Jimmie_Will_Richey_I
Or this link for a post with a link to multiple threads about time gap issues: Incorrect time gap in meetup - #2 by D_Watson