F9 4409 then DL 1762 at Atlanta
Washington → Atlanta → Chattanooga
Timetable, Atlanta time
20:27F9 4409 from Washington at the gate
16:46DL 1762 to Chattanooga leaves the gate
20 h 19 apart on the timetable, overnight
DL 1762 leaves 20 h 19 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.