SM 2817 then FR 4858 at Fiumicino
Cairo → Rome → Catania
Timetable, Rome time
14:00SM 2817 from Cairo at the gate
12:45FR 4858 to Catania leaves the gate
22 h 45 apart on the timetable, overnight
FR 4858 leaves 22 h 45 after SM 2817 arrives on the timetable: more than half a day, so not a connection we count.