AZ 573 then U2 1684 at Fiumicino
Zurich → Rome → Nice
Timetable, Rome time
20:35AZ 573 from Zurich at the gate
11:35U2 1684 to Nice leaves the gate
15 h apart on the timetable, overnight
U2 1684 leaves 15 h after AZ 573 arrives on the timetable: more than half a day, so not a connection we count.