AA 3877 then AA 3732 at DFW
Austin → Dallas-Fort Worth → Chattanooga
Timetable, Dallas-Fort Worth time
20:14AA 3877 from Austin at the gate
20:10AA 3732 to Chattanooga leaves the gate
23 h 56 apart on the timetable, overnight
AA 3732 leaves 23 h 56 after AA 3877 arrives on the timetable: more than half a day, so not a connection we count.