UA 1275 then AA 1325 at LAX
Cancún → Los Angeles → Indianapolis
Timetable, Los Angeles time
17:34UA 1275 from Cancún at the gate
16:56AA 1325 to Indianapolis leaves the gate
23 h 22 apart on the timetable, overnight
AA 1325 leaves 23 h 22 after UA 1275 arrives on the timetable: more than half a day, so not a connection we count.