QF 4594 then QF 3669 at San Francisco
Philadelphia → San Francisco → Seattle
Timetable, San Francisco time
19:28QF 4594 from Philadelphia at the gate
17:42QF 3669 to Seattle leaves the gate
22 h 14 apart on the timetable, overnight
QF 3669 leaves 22 h 14 after QF 4594 arrives on the timetable: more than half a day, so not a connection we count.