From bees hives, I know they can make decisions as a whole, and it is not exactly known how they do that. For example, if a swarm of bees want to leave the hive with the queen, about the halvehalf flies away and about the half stays. How do they decide this?
Bees can communicate onin several ways,ways; with odor, touches and movements, for example, and movements. Even the sound of the hive tells the beekeeper something about its mood. Many little brains communicate with each other and make a decision concerning all of them.
I imagine something similar, creatures (creatures with a single brain,) but able to communicate in a much more advanced way than humans do. Imagine something like humans (or completly different), but able to communicate like bees, connecting their abilities of intelligence. Maybe furthermorethey would be further able to connect physically, allowing information transfer between multiple brains onin multiple ways.
Maybe they could form a single creature consisting of many connected individuals, acting like being one, but still able to cleave.