UA 718 then AF 8811 at San Francisco
Mexico City → San Francisco → Los Angeles
Timetable, San Francisco time
16:44UA 718 from Mexico City at the gatealso AC 5033
11:44AF 8811 to Los Angeles leaves the gate
19 h apart on the timetable, overnight
AF 8811 leaves 19 h after UA 718 arrives on the timetable: more than half a day, so not a connection we count.