I did not want to interrupt her train of thought.

Again he fell silent, and Katherine did not interrupt his train of thought.

Julia had been talking a lot, interrupting my train of thought.

The human brain was not so constituted that it could interrupt its train of thought at will.

She didn't want to interrupt her train of thought.

Before he could formulate a plan, the driver interrupted his train of thought.

The question interrupted his train of thought, so that for a moment he failed to take it in.

Mostly, though, because Aide kept interrupting his train of thought.

"Well then, don't let me interrupt your train of thought."

Marcia's voice interrupted my train of thought and I blinked.