I want to clarify one thing, and then I'm done.
I used to think that ball pythons were completely solitary animals.
I still do.
If all things are equal, they prefer small tight burrows that barely have room for one snake at a time. If given a choice, they will den alone.
However, if absolutely necessary, they will share a larger space with other ball pythons. While not the norm, we know it does happen.
This is critical to understand.
Your ball python prefers to be alone.
The only benefit they get from sharing a den site is if it's in critical need - ie: there is a lack of available dens and they are forced to share a space.
If you keep that in mind, you then understand the somewhat difficult task of setting up an environment if you wanted to cohab them and fulfill their natural preferences.
The enclosure needs to be large enough to accommodate several (not one, not two, not three) denning sites, and provide enough sensory distraction such that stress is reduced to a minimum.
There is no benefit to doing it.