Yes that's correct Bernie.
They used pacemakers when Bannister broke the 4 minute too. Bannister sat one back on the fence yelling out to the leader, go faster. Then after two laps the leader pulled out of the race. The guy running third went to the lead with Bannister in his slipstream, with a couple of hundred of yards to go Bannister went around him and went onto win, what was a contrived race. I guess it's it's not much different to using pacemakers in horse racing.