[Openurmind]

I think in this case interbreeding species to create “Mules” might come to mind as a comparison?

[adorno]

I think in this case interbreeding species to create “Mules” might come to mind as a comparison?

But, did the the Neanderthal/Homo Sapiens relationships yield any offspring capable of further offspring?

If so, the comparison to the mule is not correct. If offspring were capable of reproducing further, then, Neanderthals and Homo sapiens were of the same species.