A thing that drives almost anyone crazy: when they have something to teach to the other person but the other person is in teacher mode themselves.
When you aren't in learner mode, you forget that sometimes insights will emerge on dimensions you aren't thinking of, that are in your blind spot.
When you're stressed you think, "No, I'm looking right where you're pointing and don't see anything, you're wrong. But now look where I'm pointing, where I'm showing you an obvious and important thing that you would see if you simply looked!"
The more powerful person gets stressed the other person doesn't understand and will do the wrong thing.
The less powerful person fears they will be fired.
Both are defensive crouches they accelerate to make them less able to receive.
It's possible but unnatural to be in a marbled teaching/learning state at once.
It's only possible when you aren't stressed.
If you're stressed, you're in a binary either teacher or learner mode.