[notananthem]

Depends how you want to handle it. If its rude, address it in the moment as you would a rude colleague. If its someone you'd report to, ask the other interviewers if this is to be expected (hint; it will be, but asking cements in these peoples' minds that its effecting hiring). Be loud and honest and mostly don't work there. There's a million places to work right now, but make it known why you won't deal with people's bs, or better yet address it in the moment and let them know its not acceptable. If its just "perceived rude" but fine, then great, you both learned something. If its fine and you just thought wrong, great lesson, you learned you were mistaken.