Dan Harmon

"Community" creator Dan Harmon's firing from his own show came shortly after his very public view with Chevy Chase -- but fellow cast member Jim Rash says one thing has nothing to do with the other.

TMZ has obtained an audio recording of "Community" creator Dan Harmon discussing the Chevy Chase voicemail moments before playing the tape for an audience at a recent comedy event ... in which Harmon calls Chase an "A-hole" who was probably DRUNK when he made the call.