AA 5510 then DL 2467 at Atlanta
Washington National → Atlanta → Knoxville
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
21:04DL 2467 to Knoxville leaves the gate
21 h 41 apart on the timetable, overnight
DL 2467 leaves 21 h 41 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.