DL 1007 then DL 854 at Atlanta
Washington National → Atlanta → Springfield
Timetable, Atlanta time
21:41DL 1007 from Washington National at the gate
13:50DL 854 to Springfield leaves the gate
16 h 09 apart on the timetable, overnight
DL 854 leaves 16 h 09 after DL 1007 arrives on the timetable: more than half a day, so not a connection we count.