DL 1007 then DL 5312 at Atlanta
Washington National → Atlanta → Valdosta
Timetable, Atlanta time
21:41DL 1007 from Washington National at the gate
11:59DL 5312 to Valdosta leaves the gate
14 h 18 apart on the timetable, overnight
DL 5312 leaves 14 h 18 after DL 1007 arrives on the timetable: more than half a day, so not a connection we count.