UA 2754 then UA 1271 at San Francisco
Minneapolis → San Francisco → Mexico City
Timetable, San Francisco time
19:35UA 2754 from Minneapolis at the gatealso OZ 6312, VA 8253, NZ 9438
10:45UA 1271 to Mexico City leaves the gatealso AC 3479, NZ 9821
15 h 10 apart on the timetable, overnight
UA 1271 leaves 15 h 10 after UA 2754 arrives on the timetable: more than half a day, so not a connection we count.