UA 1970 then AC 4309 at San Francisco
Cleveland → San Francisco → Santa Ana
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
15:05AC 4309 to Santa Ana leaves the gatealso AS 4631, UA 4631, VA 8494
17 h 20 apart on the timetable, overnight
AC 4309 leaves 17 h 20 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.