CZ 1637 then QR 2125 at San Francisco
Philadelphia → San Francisco → Santa Ana
Timetable, San Francisco time
20:33CZ 1637 from Philadelphia at the gatealso AA 3079, BA 5439
17:49QR 2125 to Santa Ana leaves the gatealso AS 2407, AA 9344
21 h 16 apart on the timetable, overnight
QR 2125 leaves 21 h 16 after CZ 1637 arrives on the timetable: more than half a day, so not a connection we count.