You answered your own question:

> experience isn’t a unidimensional value that is directly comparable. You can have more experience than someone else in one dimension, and the other person can have more experience than you in a different dimension.

When two such people communicate, it's rarely clear who knows more. Typically, I know more about the task I'm working on, and he knows more about X, and that's why I'm asking him about X. Sure, if he wants to know what I'm working on - happy to engage, provided he doesn't withhold the information I'm asking for.

Useful conversation relies on mutual purpose.