They take a 3-4-3 shape in possession, with Di staying back. Spinazzola is used as an attacker on the left, which creates an overload with Insigne. That switch back play to the right is open for the taking when defenders over commit, as you saw when Chiesa scored. Berardi doesn't have the same killer instinct in attack, but he retains possession better at times. Next round, they need Chiesa in there to keep their opponents weary.