DL 9970 then QR 2091 at San Francisco
Seattle → San Francisco → Santa Ana
Timetable, San Francisco time
11:15DL 9970 from Seattle at the gate
09:00QR 2091 to Santa Ana leaves the gate
21 h 45 apart on the timetable, overnight
QR 2091 leaves 21 h 45 after DL 9970 arrives on the timetable: more than half a day, so not a connection we count.