Looking at the tape, it looks like the LBSU coach might have put the wrong heat. At 25ish seconds (close to 200m) in his runner’s heat (2), his runner seemed to be “cut off” by Yanouri. If you go the the LBSU track Instagram video of the race, you hear their coaches in the background saying “did you see that bump”.
Looks like they may have had the case to protest that their guy was impeded in his race which would’ve gotten him through? This seems like the most logical course of events. Sucks that he wrote the wrong heat for Sam Ellis though.