F9 4409 then DL 1769 at Atlanta
Washington → Atlanta → Chattanooga
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
17:46DL 1769 to Chattanooga leaves the gate
18 h 33 apart on the timetable, overnight
DL 1769 leaves 18 h 33 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.