The point is not the interruption just of the personās sentence or question. The point is the interruption of their thinking. When we interrupt peopleās sentences, we interrupt their thinking. Realizing that can be sobering. When we see interruption as breaking only into peopleās words, we do it and scoot off. When we recognize it as demolishing their thinking, we stop. Or at least pause.
And that is what matters here: interruption as the demolition of peopleās thinking. Interruption of thinking comes from a number of sources. These are the most pervasive:
Ourselves
Others
Occurrences
Assumptions
Systems