UA 506 then AV 2036 at San Francisco
Raleigh-Durham → San Francisco → Seattle
Timetable, San Francisco time
11:19UA 506 from Raleigh-Durham at the gate
07:25AV 2036 to Seattle leaves the gate
20 h 06 apart on the timetable, overnight
AV 2036 leaves 20 h 06 after UA 506 arrives on the timetable: more than half a day, so not a connection we count.