DL 860 then QR 2091 at San Francisco
Boston → San Francisco → Santa Ana
Timetable, San Francisco time
13:51DL 860 from Boston at the gatealso LY 4227, WS 7646
09:00QR 2091 to Santa Ana leaves the gate
19 h 09 apart on the timetable, overnight
QR 2091 leaves 19 h 09 after DL 860 arrives on the timetable: more than half a day, so not a connection we count.