VA 8075 then QF 4397 at San Francisco
Houston → San Francisco → Philadelphia
Timetable, San Francisco time
07:28VA 8075 from Houston at the gate
22:58QF 4397 to Philadelphia leaves the gate
15 h 30 apart on the timetable
QF 4397 leaves 15 h 30 after VA 8075 arrives on the timetable: more than half a day, so not a connection we count.