Atalanta just punch in the correct time, they do a similar game to the one they made against Liverpool, very simialr, they dont play so much with the ball but they go in fast speed into forwards transitions and PUMP!, they do the same against Liverpool, you can check it in the ball percentage.
Masterclass from Ginapiero Gasperini an his boys, also for taht you need a player in a state of grace, like Ademola Lookman was.
I really like Atalanta's playing style as you said when the match started. Atalanta was more relaxed and read Leverkusen's movements more often.
I was very surprised at how well Atalanta was able to always know how the ball would go when a Leverkusen player controlled the ball and Atalanta also looked more confident even though they didn't attack too much, but if when Leverkusen gave them a little chance, Atalanta attacked very quickly and made Leverkusen's defense become very difficult.
For Ademola Lookman, after successfully helping Atalanta lift the UEL trophy, he was always given positive praise and this was a great experience for him.
I saw how he played and I admired the player whose skills made Leverkusen's defense unable to block him.