UA 177 then EW 7887 at Fiumicino
Denver → Rome → Hamburg
Timetable, Rome time
11:55UA 177 from Denver at the gate
11:10EW 7887 to Hamburg leaves the gate
23 h 15 apart on the timetable, overnight
EW 7887 leaves 23 h 15 after UA 177 arrives on the timetable: more than half a day, so not a connection we count.