I'm starting a new project envolving neanderthal conculture and conlang.

After googling for geographical distribuition of neanderthal archeological
sites, I was a bit surprised to see that it covers an area similar to, if
smaller than, the geographical distribuition of Proto Indo European (PIE).

Is there a relation between the two?

Could a neanderthal language be the root of PIE?

Falcata Lusa