The refs are on that "fuck the west coast teams" tip. They did that same bullshit against Shawntae Spencer last week when we played Minnesota. All he did was signal "no catch" and he got flagged for unsportsmanlike conduct.
At some point you have to start thinking the Chargers were just having an awful game. I thought the raiders were gonna be a lot better than this based on their first couple weeks, but KC is worse than I thought they would be so I can't really credit them too much for that game. That week 1 matchup was good, but like I said, you might have to chalk that up to poor play by SD based on how terrible Oakland has been since then.