UA 900 then QF 4864 at San Francisco
London → San Francisco → Phoenix
Timetable, San Francisco time
13:20UA 900 from London at the gatealso LX 3042, AC 5375, OS 7857, SN 9099, LH 9374, NZ 9831
05:50QF 4864 to Phoenix leaves the gate
16 h 30 apart on the timetable, overnight
QF 4864 leaves 16 h 30 after UA 900 arrives on the timetable: more than half a day, so not a connection we count.