DL 5317 then AA 5471 at Atlanta
Knoxville → Atlanta → Washington National
Timetable, Atlanta time
08:15DL 5317 from Knoxville at the gate
08:01AA 5471 to Washington National leaves the gate
23 h 46 apart on the timetable, overnight
AA 5471 leaves 23 h 46 after DL 5317 arrives on the timetable: more than half a day, so not a connection we count.