My son (does have ASD) hated (hates) to be interrupted mid sentence and has a compulsion to start all over again at the beginning if interrupted. So he is talking and little brother yells good night from another room....he starts over...husband enters the room not knowing we are talking (son is a quiet, slow talker with pauses and one can enter a room and not know that he is talking). He has to start over. You need to ask a question because none of what he is saying makes any sense because you missed a key fact....he can't answer your question and pick back up...sometimes talking with him is painful.