UA 3926 then AC 4309 at San Francisco
Newark → San Francisco → Santa Ana
Timetable, San Francisco time
22:56UA 3926 from Newark at the gate
15:05AC 4309 to Santa Ana leaves the gatealso AS 4631, UA 4631, VA 8494, LH 9264
16 h 09 apart on the timetable, overnight
AC 4309 leaves 16 h 09 after UA 3926 arrives on the timetable: more than half a day, so not a connection we count.