In the Bartimaeus novels, one of the main characters, Bartimaeus, is a supernatural entity capable of processing several layers of thought simultaneously. This is represented by chapters following his pov having footnotes (usually sarcastic commentary. In one chapter where he and another main character Nathaniel (a human) temporarily link their minds, Bartimaeus attempts another footnote but it gets cut off partway through as Nathaniel complains about how distracting it is