W4 6256 then UA 885 at Fiumicino
Palermo → Rome → Washington
Timetable, Rome time
17:40W4 6256 from Palermo at the gate
11:00UA 885 to Washington leaves the gate
17 h 20 apart on the timetable, overnight
UA 885 leaves 17 h 20 after W4 6256 arrives on the timetable: more than half a day, so not a connection we count.