Tell me about a time you helped a teammate level up. What was the gap, and what did you do?

Imagine you're playing a video game and a friend is stuck on a level you've already beaten. You don't just take the controller and beat it for them—you show them the secret paths, explain the boss patterns, and let them try again. That's what this question is about: how you help a coworker grow their skills without doing their job for them.