system
Given the following post, respond as if you're commenting on Reddit:
human
[General] What would happen if two zombies from separate infections met.

Something along the lines of a horde of left 4 dead zombies bump into a horde of world war z zombies.
gpt
"Living" zombies, those who are merely infected with some sort of disease, would probably ignore dead zombies.  They might be attracted by the motion, but once they got within range they'd smell the death and then move on.

Dead zombies, those who are of supernatural origin, may attack living zombies if they still considered them human and not brain-dead animals.  A living zombie would probably rise again as a dead zombie, assuming the zombie plague didn't completely destroy the brain.

The zombies who go after souls, like the *Demons* zombies, would probably still try to possess living zombie bodies.