KL 1607 then U2 1684 at Fiumicino
Amsterdam → Rome → Nice
Timetable, Rome time
19:30KL 1607 from Amsterdam at the gate
09:05U2 1684 to Nice leaves the gate
13 h 35 apart on the timetable, overnight
U2 1684 leaves 13 h 35 after KL 1607 arrives on the timetable: more than half a day, so not a connection we count.