The anatomical (dimensional) mismatch between humans and chimpanzees is reportedly less than for a human/gorilla pairing, however it is unlikely that Chongo would be a particularly satisfying mate for a human female, since it is reliably reported that the average copulation by a male chimp lasts approximately 8 seconds. Some human females have been known to remark that this is not much different than for their usual (human) mates; but those reports don't typically come from "satisfied" ones, and a degree of sarcastic exaggeration is suspected.

It is equally unlikely that a human male would make much of an impression on female chimps, as for male chimps in the wild - the ones with access to females - the expected rate of copulations for mediocre average performers is 16 to 28 times per day. Any attempt by a "Tarzan" to match the performance of a typical chimp competitor would have him "shooting dust" by the time the bored females were chomping their first morning leaf for breakfast.

John