An individual's Flow State happens in a learning process when the rate of creativity is exponentially accelerated.
When teams work together, there are moments of shared creativity where solutions appear almost magically, woven together by their shared intuitions.
The most powerful part of these interactions is often a rapid-fire ideation where team members spring "What if...?" questions to each other, creating a process of integrated morphing toward a shared proposition that will guide their work.
Here is John Boone talking about Collective Flow at a TED talk:
YOUTUBE EIk-K6JILj4 Collective flow | John Boone | TEDxAuckland