DL 455 then DL 1005 at Atlanta
Washington National → Atlanta → Detroit
Timetable, Atlanta time
10:56DL 455 from Washington National at the gate
08:30DL 1005 to Detroit leaves the gate
21 h 34 apart on the timetable, overnight
DL 1005 leaves 21 h 34 after DL 455 arrives on the timetable: more than half a day, so not a connection we count.