It's inevitable to notice once I looked at the rest of the primetime schedules. They have like 5 or 6 games in primetime this season, and only one of them is a divisional rivalry. IIRC Chargers aren't even the top-3 most supported franchise in their home market LA, and they're barely playoff contender. So why are they getting an excessive amount of primetime games?
The game is done when that Hail Mary backfired