BALTIMORE — The most up-and-down Chiefs season of the Patrick Mahomes Era will conclude where three others already have. In the Super Bowl. The Chiefs are headed to the Super Bowl for the fourth time in six seasons after a 17-10 victory against the Ravens in the AFC Championship Game. Upset victory, I guess I should say. The Chiefs won a second straight road game, with some offensive firepower in the first half and a defense that returned to form, to advance to Las Vegas. We’ll have plenty of time to digest what’s next. For now, here are five observations from immediately after the game: 1. De…