FR 1645 then UA 178 at Fiumicino
Vienna → Rome → Denver
Timetable, Rome time
22:10FR 1645 from Vienna at the gate
13:55UA 178 to Denver leaves the gate
15 h 45 apart on the timetable, overnight
UA 178 leaves 15 h 45 after FR 1645 arrives on the timetable: more than half a day, so not a connection we count.