Contemporaneous protolanguages

Suppose you could go back in time to when Proto-Indo-European
was spoken in the Caucasus or wherever we think it was these days.
Would a quick trip down to the Middle East find a culture of people
speaking Proto-Afroasiatic at the same time?  And what would the
people in Eastern Asia be speaking at this point?

Presumably there wouldn't be anyone at all in the Americas yet . . .

-Marcos

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