More:

en.wikipedia.org/…/Interbreeding_between_archaic_…

I recommend also using the Pubpeer extension on your browser for topics like this for more context as were still building a fuzzy picture.

addons.mozilla.org/en-US/firefox/addon/pubpeer/

…google.com/…/fmcdfigcdfkdghdklblbbpacikcchbbh?hl…