In working with enactments the therapist must seek to become aware of their unconscious and dissociated parts of self.
Despite the reason, we humans can’t keep a secret. We will say it out. The key is for the listener to stop listening and start watching. As a therapist it is certainly better to do this regularly with your clients.
Or the observer will instinctually fill in the missing parts as we will all naturally complete the gestalt in our own minds and it will be completed in a positive fashion.