U2 4921 then U2 1684 at Fiumicino
Paris Orly → Rome → Nice
Timetable, Rome time
19:40U2 4921 from Paris Orly at the gate
14:45U2 1684 to Nice leaves the gate
19 h 05 apart on the timetable, overnight
U2 1684 leaves 19 h 05 after U2 4921 arrives on the timetable: more than half a day, so not a connection we count.