UA 1803 then AA 1325 at LAX
Las Vegas → Los Angeles → Indianapolis
Timetable, Los Angeles time
17:46UA 1803 from Las Vegas at the gate
16:56AA 1325 to Indianapolis leaves the gate
23 h 10 apart on the timetable, overnight
AA 1325 leaves 23 h 10 after UA 1803 arrives on the timetable: more than half a day, so not a connection we count.