Complex sentence: The episode was written by Hillenburg who also functioned as storyboard director, Derek Drymon who also functioned as storyboard artist, and Tim Hill, and the animation was directed by the show's supervising director, Alan Smart.
Split into simpler sentences: The episode was written by Hillenburg who also functioned as storyboard director, Derek Drymon, who also functioned as storyboard artist, and Tim Hill. The animation was directed by the show's supervising director, Alan Smart.