What episode of Pokemon does hitmonlee fight with hitmonchan?

While Hitmonlee and Hitmonchan have been in multiple episodes of Pokemon, they've never fought each other directly in an official episode.

They've appeared together in episodes where they're owned by different trainers and have different goals, such as:

* Episode 223 - "The Ties That Bind!" - Both Hitmonchan and Hitmonlee are owned by the same trainer and fight alongside each other in a tag battle.

* Episode 310 - "A Slippery Encounter!" - Both Hitmonchan and Hitmonlee are owned by different trainers and fight against each other in a battle.

However, they have never fought in a one-on-one battle, which would be a very interesting matchup considering their contrasting fighting styles.