B6 833 then DL 4631 at San Francisco
Boston → San Francisco → Santa Ana
Timetable, San Francisco time
20:55B6 833 from Boston at the gatealso EY 8011
15:05DL 4631 to Santa Ana leaves the gate
18 h 10 apart on the timetable, overnight
DL 4631 leaves 18 h 10 after B6 833 arrives on the timetable: more than half a day, so not a connection we count.