DL 1584 then AM 643 at LAX
Austin → Los Angeles → Mexico City
Timetable, Los Angeles time
20:19DL 1584 from Austin at the gate
18:05AM 643 to Mexico City leaves the gate
21 h 46 apart on the timetable, overnight
AM 643 leaves 21 h 46 after DL 1584 arrives on the timetable: more than half a day, so not a connection we count.