The Chiefs' defense has played a good game, but can't be expected to defend 30 and 40-yard fields all day.30 points is not a good defensive game, especially considering the score at halftime
KC shit the bed in the second half
Giving up 30 points isn't bad when a defense has to play when their offense has the ball for 23 plays in the second half, nets 15 yards, and gives up the ball four times. If the Chiefs' defense had played a bad game, the Ravens might have had 50+ points with how bad the offense was. If your offense is putting you on the field for over 2/3 of the game, it's hard to stay fresh.