UA 357 then AA 1328 at LAX
Austin → Los Angeles → Miami
Timetable, Los Angeles time
09:08UA 357 from Austin at the gate
09:00AA 1328 to Miami leaves the gate
23 h 52 apart on the timetable, overnight
AA 1328 leaves 23 h 52 after UA 357 arrives on the timetable: more than half a day, so not a connection we count.