Stuck in a perpetual loading screen following completion of Super7 on Series X

As the title states, I did a run of the Super7 to get the Police Siren. Completed that, and now I’m stuck at the loading screen listening to Hospital Records for the last 15 minutes. It keeps showing me landscapes of parts of the map, as well as telling me that the season’s changing and various stats.

XBox Series X, Premium Edition, Digital. I’m about to quit to the dashboard - hopefully this doesn’t corrupt my save.

Why can I not play your game, Playground? Why does this persist?