Put the meaning into your own words.

A brief digression about the author's childhood interrupted the argument.

For the next reading, Leon prepared a short introduction to elucidate the relationship between two narrators. He used the colloquial phrase 'keep an eye on the dates' because the event was informal. A rehearsal revealed one distracting digression about how he bought his notebook. The story amused his friends, but it did not help listeners understand the chapter.