AC 4121 then QF 3772 at San Francisco
Ontario → San Francisco → Los Angeles
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
16:46QF 3772 to Los Angeles leaves the gate
22 h 56 apart on the timetable, overnight
QF 3772 leaves 22 h 56 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.