What is 2023–24 UEFA Champions League?
{{Infobox international football competition |tourney_name = UEFA Champions League |year = 2023–24 |image = Wembley-Stadion 2013 16x10.jpg |size = 275px |caption = [[Wembley Stadium]] in [[London]] hosted the final. |dates = {{nowrap|''Qualifying:''<br />27 June – 30 August 2023<br />''Competition proper:''<br />19 September 2023 – 1 June 2024}} |num_teams = ''Competition proper:'' 32<br />''Total:'' 78 |associations = 53 |champion_other ={{fbaicon|ESP}} [[Real Madrid CF|Real Madrid]] |count =15 |second_other ={{fbaicon|GER}} [[Borussia Dortmund]] |matches = 125 |goals = 375 |attendance = {{#expr: <!--Group A-->+ 46911 + 75000 + 73204 + 35690 + 51776 + 73249 + 75000 + 36099 + 51733 + 75000 + 73073 + 34726 <!--Group B-->+ 33544 + 58860 + 37040 + 34206 + 39595 + 38133 + 60024 + 34200 + 29403 + 59987 + 37456 + 35000 <!--Group C-->+ 65207 + 18422 + 73445 + 51649 + 29820 + 72062 + 42449 + 68509 + 73562 + 15855 + 37841 + 73420 <!--Group D-->+ 36591 + 60917 + 28227 + 66573 + 71825 + 56002 + 36815 + 30071 + 52944 + 34419 + 69010 + 27134 <!--Group E-->+ 44008 + 46168 + 61742 + 56063 + 44031 + 55844 + 60863 + 36612 + 50555 + 43992 + 63574 + 56391 <!--Group F-->+ 65695 + 47379 + 81365 + 52009 + 47356 + 52024 + 81365 + 75649 + 46435 + 75292 + 81365 + 52037 <!--Group G-->+ 31500 + 50204 + 45228 + 47201 + 42209 + 31500 + 51049 + 41961 + 51402 + 31500 + 43331 + 49443 <!--Group H-->+ 40989 + 46729 + 13509 + 49722 + 41409 + 13651 + 49147 + 44830 + 47209 + 43533 + 48113 + 13550 <!--Round of 16 1st leg-->+ 49111 + 49529 + 46435 + 73709 + 34950 + 57470 + 35853 + 45028 <!--Round of 16 2nd leg-->+ 60257 + 50301 + 39336 + 69196 + 81365 + 75000 + 51531 + 76126 <!--Quarter-finals 1st leg-->+ 60221 + 68641 + 76680 + 47470 <!--Quarter-finals 2nd leg-->+ 75000 + 81365 + 52306 + 50309 <!--Semi-finals 1st leg-->+ 81365 + 75000 <!--Semi-finals 2nd leg-->+ 46435 + 76579 <!--Final-->+ 86212}}<!--Starting from group stage, exclude qualifying rounds and play-off r