Mind may well operate in parallel, producing more than one action simultaneously. Producing actions is just what minds do. A consequence is that minds are properties of autonomous agents. Mind is better viewed as a continuous, as opposed to a boolean notion . It's more useful to think about degrees of mind, and what capabilities of mind a particular organism, system, or agent displays.
Mind is aggregate rather than monolithic.
All but the most simple minds are comprised of relatively independent competencies or agents with only limited communication bandwidth between them. On the other hand, it's useful to hold your breath when you go under water. So it's useful that the goal agent for swimming under water communicate with respiratory control. Mind is enabled by a multitude of disparate mechanisms. There is a role for all the various modalities and mechanisms we have discussed so far and, no doubt, many, many more.