VS 1903 then UA 412 at San Francisco
Seattle → San Francisco → Mexico City
Timetable, San Francisco time
23:56VS 1903 from Seattle at the gatealso AF 2209, DL 2635, AM 4471, AM 4541
22:48UA 412 to Mexico City leaves the gatealso AC 5025
22 h 52 apart on the timetable, overnight
UA 412 leaves 22 h 52 after VS 1903 arrives on the timetable: more than half a day, so not a connection we count.