There is great ability in knowing how to conceal one’s ability.

Demonstrating everything you can do is not always the strongest play. Showing your full capability invites competition, raises expectations you then have to keep meeting, and puts people on guard who would otherwise have spoken freely. Holding some of it back is not dishonesty; it is judgement about when a capacity is more useful known and when it is more useful unknown. Knowing which is which is itself a skill.

In the next room where you could impress, try contributing rather than performing. Say the useful thing and stop, leave the rest unsaid, and watch what people tell you when they are not measuring themselves against you.