The new-look league phase has officially caused plenty of drama in the UEFA Champions League, leaving several European heavyweights in perilous position with three games left to book a spot in the knockout rounds.

Four years ago, in 2020, Bayern Munich beat Paris Saint-Germain 1-0 in the Champions League final. Tonight, they meet for the third time since. Those four years — an Olympic cycle, a World Cup cycle — is a period of time that lends itself to assessing how the two clubs, which share as many similarities as differences, have changed.