but, it is a common knowledge that when the actress doesn't like anal so much can't take it fast and deep, then the operator shoots the intercourse with a big zoom, and the girl is substituted by another actress and the scene look more dynamic. unless it is unclear that its another ass on the screen. People suspect that this trick was used for example in Anita Dark movies.
what I mean to say, is that here the anal is really dynamic as well. Either because she can stand it, or because it is simply a vaginal contact. We don't know as we don't see it. We just hear that when Peter talks with her butt

But this is the screen with a true vag-intercourse and this one is after 54 minute (which is supposed to be anal) I do not vouch but seems like Iwia's ass is placed exactly at the vagina) or we see a very smart trick of Peter, which makes him a brilliant director)
