This set me at a lower height from Robert, who maintained his desire to sit on his office chair.
Now I am a good twelve inches lower than Robert, which means he is in the superior or dominating position (which may explain his monologue), while I am in the submissive or inferior position.
My role is to listen.
I think that Robert’s initial gesture to the other chair was correct; he was correct in his aim to set us at the same physical level.
But when his gesture failed and I opted for the couch, his best tactic was to sit alongside me on the couch.
That is the body language which says “I am prepared to meet you”.