BA 560 then U2 1684 at Fiumicino
London Heathrow → Rome → Nice
Timetable, Rome time
19:25BA 560 from London Heathrow at the gate
11:35U2 1684 to Nice leaves the gate
16 h 10 apart on the timetable, overnight
U2 1684 leaves 16 h 10 after BA 560 arrives on the timetable: more than half a day, so not a connection we count.