“We’ve never observed the Neanderthal Y chromosome DNA in any human sample ever tested,” Bustamante says in a press release. “That doesn't prove it’s totally extinct, but it likely is.”I think this is wishful thinking. Before history gets rewritten, recall what is your impression of the Mongols.
https://pmc.ncbi.nlm.nih.gov/articles/PMC1180246/
I don't doubt one could do the same with most violent expansions in human history. And it's usually Y chromosome DNA that's getting spread far and wide, and that was not because the warrior leaders were empathetic and altruistic towards the conquered females.
And the definition of success in ecological terms has to be reproduction and survival, before anything else.
Humans and Neanderthals May Have Had Trouble Making Male Babies https://www.smithsonianmag.com/smar...source=related-content&itm_medium=parsely-api



Her neurological issues are gone as she grows a bit more feathers.