UA 1948 then VA 8546 at San Francisco
Cancún → San Francisco → Los Angeles
Timetable, San Francisco time
16:52UA 1948 from Cancún at the gate
06:00VA 8546 to Los Angeles leaves the gate
13 h 08 apart on the timetable, overnight
VA 8546 leaves 13 h 08 after UA 1948 arrives on the timetable: more than half a day, so not a connection we count.