DL 112 then FR 4872 at Fiumicino
Boston → Rome → Catania
Timetable, Rome time
08:45DL 112 from Boston at the gate
08:30FR 4872 to Catania leaves the gate
23 h 45 apart on the timetable, overnight
FR 4872 leaves 23 h 45 after DL 112 arrives on the timetable: more than half a day, so not a connection we count.