What is the idiom in Only when gulch which marked uttermost limit of Poker Flat was reached leader spoke briefly and to point?

The idiom in the phrase "Only when the gulch which marked the uttermost limit of Poker Flat was reached did the leader speak briefly and to the point" is "to the point."

This idiom means concise, direct, and relevant to the topic at hand. The phrase emphasizes that the leader's speech was clear and purposeful, delivered only when absolutely necessary and without unnecessary embellishment.