DL 850 then DL 1892 at Atlanta
Washington National → Atlanta → Chattanooga
Timetable, Atlanta time
20:29DL 850 from Washington National at the gate
14:30DL 1892 to Chattanooga leaves the gate
18 h 01 apart on the timetable, overnight
DL 1892 leaves 18 h 01 after DL 850 arrives on the timetable: more than half a day, so not a connection we count.