F9 2072 then UA 2411 at Philadelphia
Raleigh-Durham → Philadelphia → Denver
Timetable, Philadelphia time
16:24F9 2072 from Raleigh-Durham at the gate
15:35UA 2411 to Denver leaves the gate
23 h 11 apart on the timetable, overnight
UA 2411 leaves 23 h 11 after F9 2072 arrives on the timetable: more than half a day, so not a connection we count.