AZ 1684 then U2 1684 at Fiumicino
Firenze → Rome → Nice
Timetable, Rome time
19:55AZ 1684 from Firenze at the gate
19:45U2 1684 to Nice leaves the gate
23 h 50 apart on the timetable, overnight
U2 1684 leaves 23 h 50 after AZ 1684 arrives on the timetable: more than half a day, so not a connection we count.