So what happened during the 'bike change farce' of Jumbo...?
Vingegaard had his chain dropped. Van Hooydonck stopped and wanted to repair the chain on Vingegaard bike. Vingegaard was never supposed to take Van Hooydonck's bike as Van Hooydonck is probably sitting on a XL and Vingegaard has something like a S or M size.
But Vingegaard, supposed to hold Van Hooydonck's bike for a moment, "stole" his bike and only realised it was too big when he was 100 meters further (panic decision).
WvA caught up with Vingegaard struggling to pedal, he waved at Vingegaard ('follow my wheel'!) but Vingegaard couldn't even pedal so he freewheeled untill...
Soon Vingegaard caught up with Kruiswijk who waited with a bike that fits Vingegaard (only Kuss and Kruiswijk are supposed to change bikes with Vingegaard as they have more or less the same size), and they switched bikes. Next you see Kruiswijk trying to mount Van Hooydoncks bike (quite funny / farcical), and just at the same time Vingegaard sees the team car and quickly changes bikes.