AA 6289 then AA 3449 at DFW
Austin → Dallas-Fort Worth → Tallahassee
Timetable, Dallas-Fort Worth time
15:11AA 6289 from Austin at the gate
12:19AA 3449 to Tallahassee leaves the gate
21 h 08 apart on the timetable, overnight
AA 3449 leaves 21 h 08 after AA 6289 arrives on the timetable: more than half a day, so not a connection we count.