W4 6132 then IB 654 at Fiumicino
Nice → Rome → Madrid
Timetable, Rome time
19:55W4 6132 from Nice at the gate
19:00IB 654 to Madrid leaves the gate
23 h 05 apart on the timetable, overnight
IB 654 leaves 23 h 05 after W4 6132 arrives on the timetable: more than half a day, so not a connection we count.