Thanks to the fact that they don't have a supreme law, they still think they are part of the same existence and have the same goal. So they work together in harmony.
It is actually a good thing that he has many consciousnesses. When one consciousness is down, the others can take over the job of directing the body.
Plus, with many consciousnesses working together, they can use all of the techniques of each pathway together easily. This way, none of the pathways they use will go to waste because their mind is preoccupied with doing other things.
All of these are great benefits. And the price he has to pay for it is constant arguing and talking in his mind.
The divine flesh is also talking in his mind. It is constantly droning on and on, hoping to make him mentally fatigued and then use that opportunity to take over his body. But that is not going to happen at this rate.