>>101902708Worldmind and Nova Force can stay without each other, Rich had the Worldmind in his helmet so he could carry on the Xandarian Legacy along with all the Nova Force.
The Worldmind was supposed to help Rich control all the Nova Force in him even if often it caused problems, since Worldmind is a bitch.
We still don't know how the Nova Force is back in the universe, since we really don't really know what the Nova Force is, but some new individual have it (same way it happened during Dick's solo run, but we don't know if those are new recruits like Fraktur was or survivior ones like Ko-Rel)