Rightly or wrongly, you can quickly (and detrimentally) communicate your seniority with your personality, word choice, and general confidence in any given room.
People can try to look past it to hear the substance of what you're saying, but the fact is, it's very, very hard and takes enormous intention and cognitive load.
Don't leave it to the other person/people to make up their own mind. Own the signal.
What signal are you sending?
What signals do you look for?