User blog:Godfrey Raphael/Humans and Neanderthals coexisting?

What is the plausibility of a TL where humans and Neanderthals coexist? Is that plausible or ASB?

If this were plausible (and I'm not yet saying it is), I'd suspect that there would be racism between the two species. For example, some humans would look down on the Neanderthals, and vice versa.

I'm just fishing around for ideas here. I don't know if I'm gonna turn this into a real project or not. Any feedback appreaciated! Thanks.