W4 6216 then U2 1684 at Fiumicino
Paris Orly → Rome → Nice
Timetable, Rome time
18:45W4 6216 from Paris Orly at the gate
14:45U2 1684 to Nice leaves the gate
20 h apart on the timetable, overnight
U2 1684 leaves 20 h after W4 6216 arrives on the timetable: more than half a day, so not a connection we count.