UA 1224 then AA 3176 at LAX
Cleveland → Los Angeles → San Francisco
Timetable, Los Angeles time
09:12UA 1224 from Cleveland at the gate
22:04AA 3176 to San Francisco leaves the gate
12 h 52 apart on the timetable
AA 3176 leaves 12 h 52 after UA 1224 arrives on the timetable: more than half a day, so not a connection we count.