AA 1948 then QR 2091 at San Francisco
Chicago O'Hare → San Francisco → Santa Ana
Timetable, San Francisco time
13:28AA 1948 from Chicago O'Hare at the gate
09:00QR 2091 to Santa Ana leaves the gate
19 h 32 apart on the timetable, overnight
QR 2091 leaves 19 h 32 after AA 1948 arrives on the timetable: more than half a day, so not a connection we count.