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![](https://lemmy.ml/pictrs/image/d3d059e3-fa3d-45af-ac93-ac894beba378.png)
The headsets are active between plays, and have one way communication with one player on each side. Typically this is the quarterback on offense and a team captain/play caller on defense. These players wear special helmets typically marked with a green dot on the back.
The refs or other officials cut off communication when the play clock reaches 15 seconds, preventing the kind of real-time communication you suggest.
False.
Source
Section 3, article 3: SPEAKERS IN HELMETS