IB 651 then FR 4891 at Fiumicino
Madrid → Rome → Catania
Timetable, Rome time
15:30IB 651 from Madrid at the gate
12:15FR 4891 to Catania leaves the gate
20 h 45 apart on the timetable, overnight
FR 4891 leaves 20 h 45 after IB 651 arrives on the timetable: more than half a day, so not a connection we count.