There is an alchemy to the success of the Manchester City side that could yet become the second team in English football history to win the treble.
Pep Guardiola has seen no shortage of success since his arrival at the Etihad in 2016, but there has been a different feeling this season, a scarcely-interrupted harmony of every player and every method working exactly as it supposed to.
It will be difficult to winkle out a single defining factor at play if Man City are triumphant in Istanbul on Saturday and get to write this campaign into the history books in spectacular fashion: instead of doing one thing exceptionally, the Premier League champions have done it all.