UA 1853 then AA 6448 at LAX
Cleveland → Los Angeles → San Francisco
Timetable, Los Angeles time
20:27UA 1853 from Cleveland at the gate
18:51AA 6448 to San Francisco leaves the gate
22 h 24 apart on the timetable, overnight
AA 6448 leaves 22 h 24 after UA 1853 arrives on the timetable: more than half a day, so not a connection we count.