For the record, our Chiefs have had two separate playoff victory droughts of 20+ seasons. They won Super Bowl IV at the end of the 1969 postseason and then didn't win a playoff game until the 1991 postseason. Then, after their divisional round win in the 1993 postseason, they didn't win again until the 2015 postseason.
https://champsorchumps.us/team/nfl/kansas-city-chiefs