AA 1374 then UA 216 at DFW
Mexico City → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
09:51AA 1374 from Mexico City at the gate
09:00UA 216 to San Francisco leaves the gate
23 h 09 apart on the timetable, overnight
UA 216 leaves 23 h 09 after AA 1374 arrives on the timetable: more than half a day, so not a connection we count.