FR 4857 then IB 650 at Fiumicino
Catania → Rome → Madrid
Timetable, Rome time
15:55FR 4857 from Catania at the gate
14:45IB 650 to Madrid leaves the gate
22 h 50 apart on the timetable, overnight
IB 650 leaves 22 h 50 after FR 4857 arrives on the timetable: more than half a day, so not a connection we count.