AV 2347 then DL 4631 at San Francisco
Burbank → San Francisco → Santa Ana
Timetable, San Francisco time
20:08AV 2347 from Burbank at the gate
15:05DL 4631 to Santa Ana leaves the gate
18 h 57 apart on the timetable, overnight
DL 4631 leaves 18 h 57 after AV 2347 arrives on the timetable: more than half a day, so not a connection we count.