And the Grombrindal said after it said the warp spans all space and time said Slaanesh and other Chaos Gods can go to 40k, various versions of Fantasy (Age of Sigmar, Fantasy battle and others) and went on to say quote-unquote "and countless other places". (That is the exact line).
It's on SpaceBattles. Slaaneshi cults in Star Wars.
It is cool.