DL 1007 then DL 2504 at Atlanta
Washington National → Atlanta → Hartford
Timetable, Atlanta time
21:41DL 1007 from Washington National at the gate
18:09DL 2504 to Hartford leaves the gate
20 h 28 apart on the timetable, overnight
DL 2504 leaves 20 h 28 after DL 1007 arrives on the timetable: more than half a day, so not a connection we count.