A related irritator is banter overlapping the narrator. It happened for instance in Rosymond when I read the plaque on Lathander's statue. The narrator starts reading, the text appears on screen, and immediately after that, one of the companions comments. So you hear the two at the same time and the companion's text is written over the narrator's, leaving an unreadable jumble. Only after everything's quieted down can you go to the combat log and read what was said here by everyone.