Complex sentence: At this point Jake's family appears, and Roman starts calling them his own family names... and sits down on the couch beside them... dazed, while Jake's wife and son scream in fear, shock, and agony.
Split into simpler sentences: At this point Jake's family appears, and Roman starts calling them his own family names. He sits down on the couch beside them, dazed, while Jake's wife and son scream in fear, shock, and agony.