W4 6218 then FR 4856 at Fiumicino
Valletta → Rome → Catania
Timetable, Rome time
15:45W4 6218 from Valletta at the gate
14:00FR 4856 to Catania leaves the gate
22 h 15 apart on the timetable, overnight
FR 4856 leaves 22 h 15 after W4 6218 arrives on the timetable: more than half a day, so not a connection we count.