UA 1970 then UA 1506 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
16:25UA 1506 to Los Angeles leaves the gatealso CA 7318
18 h 40 apart on the timetable, overnight
UA 1506 leaves 18 h 40 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.