BA 6449 then QF 4397 at San Francisco
Los Angeles → San Francisco → Philadelphia
Timetable, San Francisco time
23:27BA 6449 from Los Angeles at the gate
22:58QF 4397 to Philadelphia leaves the gate
23 h 31 apart on the timetable, overnight
QF 4397 leaves 23 h 31 after BA 6449 arrives on the timetable: more than half a day, so not a connection we count.