UA 1970 then SK 3638 at San Francisco
Cleveland → San Francisco → Los Angeles
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
16:30SK 3638 to Los Angeles leaves the gate
18 h 45 apart on the timetable, overnight
SK 3638 leaves 18 h 45 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.