UA 451 then AF 8811 at San Francisco
New Orleans → San Francisco → Los Angeles
Timetable, San Francisco time
15:26UA 451 from New Orleans at the gate
11:44AF 8811 to Los Angeles leaves the gate
20 h 18 apart on the timetable, overnight
AF 8811 leaves 20 h 18 after UA 451 arrives on the timetable: more than half a day, so not a connection we count.