Scientists Know EXACTLY Where Denisovans and Papuans Interbred

The key questions now are where and when Papuans met and interacted with the Denisovans. Intriguingly, the genetic data suggest that male Denisovans interbred with modern human females, indicating the potential nature of the interactions as small numbers of modern humans first crossed Wallace's Line and entered Denisovan territory.

SOURCES:
Resolving out of Africa event for Papua New Guinean population using neural network
https://www.nature.com/articles/s4146...

Multiple Deeply Divergent Denisovan Ancestries in Papuans
https://pubmed.ncbi.nlm.nih.gov/30981...