Yes. That's what I thought... I can cut only in pauses between sentences or word in sentence (if intonation of speech from different angle match previous angle to prevent intonation changes in spoken lines) so overlaping is indeed a problem if I need to cut during it. But if actors act like they are overlapped with line from another actor which actually does not speak while he is not in the frame and vice versa, I think it can be done. But actors must be pretty good to do this well and smooth for later mixing.