Each competitions have seen structure variations, with expansions in the volume of collaborating teams, introduction of new rounds, and adjustments in qualification conditions over time. The team phase was played from September to December, while the knockout stage started in February, with matches generally performed on Tuesday and Wednesday evenings. https://konhci5593602.bloggosite.com/43529363/what-are-the-uefa-champions-league-and-uefa-europa-league-secrets