UA 1970 then AA 2072 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
13:28AA 2072 to Los Angeles leaves the gatealso QF 3051, IB 4847
15 h 43 apart on the timetable, overnight
AA 2072 leaves 15 h 43 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.