DL 553 then AA 2801 at LAX
Las Vegas → Los Angeles → Cancún
Timetable, Los Angeles time
08:30DL 553 from Las Vegas at the gate
08:26AA 2801 to Cancún leaves the gate
23 h 56 apart on the timetable, overnight
AA 2801 leaves 23 h 56 after DL 553 arrives on the timetable: more than half a day, so not a connection we count.