There is no way that the reigning indoor champ knowingly helps his rival to try and take a record he would want himself.
That's not how this sport works. He thought he could win running 1:45 from the front by opening as fast as possible meaning that nobody has the chance to get past on the indoor track but unfortunately was wrong
Wow, you just have all the answers. Tactics, how athletes relate to one another, how the sport works...you should consider becoming a coach to pros or an agent or a meet director or something, but then you'd have to give up posting on Letsrun...
There was a pacemaker so Brazier didn't need Berian to be an extra pacemaker. And it would make no sense whatsoever to pay Berian under the table to run 600m flat out and then die and drag himself around the last 200m in outside 32 seconds. If he was going to run a 600m time trial he'd have stopped.
He probably slowed Brazier down forcing him to run wide to overtake and Brazier only missed the record by the tiniest bit.