UA 1970 then AS 1451 at San Francisco
Cleveland → San Francisco → San Diego
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
14:44AS 1451 to San Diego leaves the gatealso QR 2084, AA 9340
16 h 59 apart on the timetable, overnight
AS 1451 leaves 16 h 59 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.