The 77-minute runtime of "The Battle of Starcourt" is the season's defining structural choice. It allows the season to resolve three distinct storylines: the kids at the mall, Joyce and Hopper in the Russian base, and the "Flayed" at the hospital (concluded in previous episodes but referenced here). The length grants the emotional weight required for Hopper’s supposed death and the Byers family moving away. Had this episode been constrained to a standard 55 minutes, the emotional payoff would likely have been rushed, proving that in this specific instance, the extended runtime was a narrative necessity.