[Graham]

Having looked at the video for a 2nd time, the Camaro was keeping up with the Rover SD1 for most of the first run, and if it had not developed an issue would most likely ended the Round in 4th place.
In the 2nd lane run it was markedly running slower, so I would say the loose axle happened near to the end of the 1st lane run.
So I don’t think the host would be aware of a technical issue until the 2nd run.