AA 3376 then UA 1780 at DFW
Loreto → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
15:55AA 3376 from Loreto at the gate
15:16UA 1780 to San Francisco leaves the gate
23 h 21 apart on the timetable, overnight
UA 1780 leaves 23 h 21 after AA 3376 arrives on the timetable: more than half a day, so not a connection we count.