EW 886 then UA 178 at Fiumicino
Cologne → Rome → Denver
Timetable, Rome time
20:00EW 886 from Cologne at the gate
13:55UA 178 to Denver leaves the gate
17 h 55 apart on the timetable, overnight
UA 178 leaves 17 h 55 after EW 886 arrives on the timetable: more than half a day, so not a connection we count.