What doesn't set right with me about the Bigfoot claim is much the same with the Neanderthal/HSS mating claim. That being that if one started with a small population of Bigfoot having mated with HSS females, since there is no evidence of the continuation of Bigfoot Y Chromosomal DNA (possibly due to their being sterile) one quickly runs out of BF males to continue mating with the females. So how can the line continue for 15,000 years?
So far there is no evidence to judge it on if evidence is show in a peer revied journal then I can tell you if it is impossable, I can not go by rummors what is said about it. Once the peer revied journal is released I can judge the evidence, to the best of our curent understanding of science.