UA 4035 then UA 52 at Dulles
Raleigh-Durham → Washington → Zurich
Timetable, Washington time
16:15UA 4035 from Raleigh-Durham at the gate
15:37UA 52 to Zurich leaves the gate
23 h 22 apart on the timetable, overnight
UA 52 leaves 23 h 22 after UA 4035 arrives on the timetable: more than half a day, so not a connection we count.