Don't be shy: how to communicate with those who know more than you and not feel like a student

Let's say you are working on a project alongside a group of geneticists. Your goal is to immerse yourself into the topic, gather requirements, agree on them, as well as clarify and describe them… And at the same time, you still need to demonstrate your competence. So how do you stop proving anything and build communication competently? How do you communicate with scientists who are sure you have at least three PhDs? How to preserve self-esteem and not go crazy with imposter syndrome? We'll get to the bottom of it.