CZ 1604 then QR 738 at San Francisco
Los Angeles → San Francisco → Doha
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
15:00QR 738 to Doha leaves the gate
15 h 20 apart on the timetable, overnight
QR 738 leaves 15 h 20 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.