I think there 's a lot of the kind that Jose was talking about , where   I mean , this is called " precision timing " in  conversation analysis , where   they come in overlapping ,  but at a point where the  information is mostly  complete. So all you 're missing is some last syllables or something or the last word or some highly predictable words.
Mmm. Mm - hmm.
So technically , it 's an overlap.
But maybe a  just a small overlap ?