UEFA Champions League winners got Real Madrid's blessings

In the last 6 year's UEFA Champions League, all cup winners met a common fact on their road, which is related to the team Real Madrid.

03 Juventus knocked out Real Madrid, AC Milan knocked out Juventus, AC Milan won the Cup
04 Monaco knocked out Real Madrid, Porto knocked out Monaco, Porto won the Cup
05 Juventus knocked out Real Madrid, Liverpool knocked out Juventus, Liverpool won the Cup
06 Arsenal knocked out Real Madrid, Barcelona knocked out Arsenal, Barcelona won the Cup
07 Bayan Munich knocked out Real Madrid, AC Milan knocked out Bayan Munich, AC Milan won the Cup
08 Roma knocked out Real Madrid, Man United knocked out Roma, Man United won the Cup

Noticed the coincidence?