KE 23 then QR 2091 at San Francisco
Seoul → San Francisco → Santa Ana
Timetable, San Francisco time
09:35KE 23 from Seoul at the gatealso DL 7860
09:00QR 2091 to Santa Ana leaves the gate
23 h 25 apart on the timetable, overnight
QR 2091 leaves 23 h 25 after KE 23 arrives on the timetable: more than half a day, so not a connection we count.