This is not true. Group flow is a well documented phenomenom[0]. While it's easiest to recognize for example in an orchestra, group flow can happen with pair programming as well.
[0] https://www.aalto.fi/en/oasis-of-radical-wellbeing/group-flo...
Like, I like to whiteboard and mock up a problem in Python to wrap my brain around it. My coworker likes to mock things up in Excel. Usually when we work together, I find myself just waiting to get off the call so I can do my own whiteboarding. What makes sense to him in his Excel file doesn’t hit as much for me.
Whereas it seems like group flow uses some kind of higher level coordination process, whether it’s whatever orchestra “best practices” have been established over centuries, or people chanting together in temples, or whatever.
The question being, while group flow exists, is it simply that it requires people who like engaging in the “group flow activities”? Like we can probably find people who coincidentally like chanting, and those people might make good monks. But will my coworker and I ever work well in a pair programming environment?
This is not to say that "group flow" doesn't exist, but I'd want more extraordinary evidence for this claim.