AA 6018 then AA 3326 at Charlotte
Knoxville → Charlotte → Austin
Timetable, Charlotte time
12:22AA 6018 from Knoxville at the gate
12:10AA 3326 to Austin leaves the gate
23 h 48 apart on the timetable, overnight
AA 3326 leaves 23 h 48 after AA 6018 arrives on the timetable: more than half a day, so not a connection we count.