UA 1970 then AS 523 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
16:17AS 523 to Santa Ana leaves the gatealso QR 2120, QR 8882, AA 9343
18 h 32 apart on the timetable, overnight
AS 523 leaves 18 h 32 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.