U2 1683 then AZ 1681 at Fiumicino
Nice → Rome → Firenze
Timetable, Rome time
07:55U2 1683 from Nice at the gate
22:09AZ 1681 to Firenze leaves the gate
14 h 14 apart on the timetable
AZ 1681 leaves 14 h 14 after U2 1683 arrives on the timetable: more than half a day, so not a connection we count.