For Dr. Frances, who was claiming that we should discuss politics instead of psychiatry, language was moving from political to psychological metaphorical, while for Dr. Lee language was moving directly from political to literal technical psychological language and concepts, used to discuss a political theme. Both psychiatrists were moving, despite specific content discussed, language to the psychological sphere, metaphorically for Dr. Frances, literally for Dr. Lee.
While opposing each other on a political theme, the net movement of the two debating psychiatrists is from political to psychological language.