Transiting Neptune presses on natal Mercury — dreams and illusion meeting mind and communication, with the friction of a square.
Transiting Neptune (dreams, illusion, and spirituality) forms a square relationship — characterized by friction, tension, drive, and growth — with natal Mercury (mind, communication, and thinking).
A very slow transit that blurs, idealizes, and sensitizes the natal point it contacts over years — inspiration and compassion, or confusion and loss of definition.
A square transit is a crisis of action: the transiting planet challenges the natal point, forcing a decision or a build-up of tension that must be discharged through effort.
Mercury governs the mind — perception, language, learning, and the exchange of information. It is how you think, speak, connect ideas, and move between things. Here it is the point being contacted — what the transit activates: mental focus, dialogue, negotiation, errands, and the way a topic gets named and understood.
Together, Neptune square Mercury brings dreams and illusion to your mind and communication. As a square, expect friction that asks for action. The specific signs and houses involved tune the expression; build the full combination to layer those in.