To reveal it to oneself is to risk acting on it and thus revealing it to others. This constellation, by the way, is fairly common. Far form being a hypothetical, it is about the psychology of power, opposition and aggression. As for how we can repress things without letting ourselves know we are doing so, that's the great mystery of unconscious thought and action, but it has been amply demonstrated that such psychological processes exist. A sends a message to B without realizing it consciously.
B picks it up consciously.
Say a psychotherapy client acts in a dependent manner toward a therapist in a way that sends out the message that the client wants the therapist to act as a parent. Communications may also be misperceived or perceived partly, rather than being missed altogether, which is another way of saying that a message is disguised, rather than completely blocked out. Add a third party, with all the possibilities of revealing and concealing information, and things really start to get complicated. A1 the unconscious part. B is conscious and B1 unconscious.