In the first round of the Champions League stage, Chelsea lost to Bayern 1-3 away, and has lost four consecutive games against Bayern.
Since Chelsea defeated Bayern at a penalty in the 2012 Champions League final, the team has lost to Bayern four times. The four losses were the 13/14 European Super League Cup penalty, the 19/20 European Championship double-killed 0-3/1-4, and the 1-3 loss this season.
Interestingly, since Chelsea beat Manchester City 1-0 in the 2021 Champions League final, the team has not won 11 times against Manchester City, with a record of 2 draws and 9 losses.
Chelsea's two Champions League championships seemed to have been casting a curse. Chelsea will also play Manchester City in the Premier League twice this season, and the next time it will be unknown.