Do not go to HR yet. I repeat - Do not say anything to HR about someone who has a higher authority than you no matter how skilled or how much tenure you have.

Do not go to HR yet. I repeat - Do not say anything to HR about someone who has a higher authority than you no matter how skilled or how much tenure you have. I learned this the hard way. HR is not your friend. They will try to only remove an obstacle which may be you.