system
Given the following post, respond as if you're commenting on Reddit:
human
[W40k] SO everything that has to do with the 40k universe has happened in the milky way. Whats up with Andromeda or the rest of the universe? Does Chaos even have influence there?

 No novels talk about it having any warp jump points. The Eldar webway doesn't go there. Nor anything ever happening. The nids are the only thing that came from out of the milky way and holy fucking shit did that change a few things. So whats going on there? The warp sorta feels like it has a 1:1 ratio of size to the milky way as well as its usually *just* behind the skin of reality so it isnt omnipresent.


I like to consider my self a 40k buff but this just hit me like a brick.
gpt
If there was sentient life in other galaxies, presumably there would be the warp too. The warp is created by emotions.

What we do know is that the Tyranids came from another galaxy. They had too have been eating something; so there is/was life in other galaxies. It could however just be endless galaxies of plants and microbes unable to feel emotions to create Warp. Another point is that Tyranids have an exception ability to adapt and evolve to any defence or offence. A trait that probably wouldn't be necessary  to eat worlds of grass and amoeba's. *Something* was fighting back against them; presumably with some level of sentience.

The warp feels like a 1:1 ratio with the mily way because it is! It's a mirror of our galaxy created by the life within. Other galaxies likely created their own but i doubt they would have the same four chaos gods.