U2 2123 then DL 231 at Fiumicino
Manchester → Rome → New York JFK
Timetable, Rome time
16:00U2 2123 from Manchester at the gate
12:55DL 231 to New York JFK leaves the gate
20 h 55 apart on the timetable, overnight
DL 231 leaves 20 h 55 after U2 2123 arrives on the timetable: more than half a day, so not a connection we count.