Yeah, we've known for a while.
Typically, when a team puts up 42 points on offense, that should be enough for that team to win the game more often than not. That was not the case for the Cincinnati Bengals on Sunday, who did indeed score 42 points but failed to win the game due to their defense absolutely crapping the bed.
It's beyond frustrating for the offense to give the effort they did and the defense continuing to not do their part.