considering modern Eurasians have a handful autosomal chromsome from Denisovan and neanderthal especially some group such as papuan more than 5%.

how is that possible we can't find any Y or Mt DNA in modern Eurasians? given we have already found some very old A00 in Africa. Both Y&Mt dna of neanderthal Denisovan died out is impossible.

maybe the Ychromsome can be wiped out but the mt dna can't, which is small and doesn't carry too much infos, and it means it can't be selected out easily