It does look coordinated, but that doesn’t mean it was pre-arranged.

When you see bird flocks or fish schools moving in coordinated ways, they didn’t arrange all that in advance. They’re observing each other and reacting in real time. Quite a lot of coordinated movements develop this way, among people as well as other animals.

A person who forgets that this type of coordination is possible might end up spending their life endlessly looking for the man behind the curtain in every moment of coordination they come across.