UA 935 then AA 3176 at LAX
London → Los Angeles → San Francisco
Timetable, Los Angeles time
18:45UA 935 from London at the gate
12:37AA 3176 to San Francisco leaves the gate
17 h 52 apart on the timetable, overnight
AA 3176 leaves 17 h 52 after UA 935 arrives on the timetable: more than half a day, so not a connection we count.