UA 5596 then BA 5608 at San Francisco
Monterrey → San Francisco → Los Angeles
Timetable, San Francisco time
08:26UA 5596 from Monterrey at the gate
07:00BA 5608 to Los Angeles leaves the gate
22 h 34 apart on the timetable, overnight
BA 5608 leaves 22 h 34 after UA 5596 arrives on the timetable: more than half a day, so not a connection we count.