U2 1683 then U2 8324 at Fiumicino
Nice → Rome → London Gatwick
Timetable, Rome time
14:00U2 1683 from Nice at the gate
10:55U2 8324 to London Gatwick leaves the gate
20 h 55 apart on the timetable, overnight
U2 8324 leaves 20 h 55 after U2 1683 arrives on the timetable: more than half a day, so not a connection we count.