When is a defensive conference held at the pitcher's mound concluded?

A defensive conference at the pitcher's mound is concluded when the coach crosses the foul line. This rule is in place to ensure that the conference is of a reasonable length and to maintain the pace of play in the game. The foul line signifies that the conference has officially ended, allowing the players to return to their positions and resume the game.

This understanding reinforces the importance of the foul line in baseball, especially concerning player movement and game time management. While other options may seem relevant, they do not indicate the formal conclusion of the conference. For example, simply leaving the dirt area of the mound or having infielders return to their positions does not mark the end of the conference—those actions could occur while the conference is still ongoing. Similarly, merely waiting for a minute to elapse does not adhere to the specific rules governing the conclusion of such conferences. Thus, crossing the foul line serves as the clear and definitive marker of when the defensive conference has officially ended.