WN 239 then DL 1892 at Atlanta
St Louis → Atlanta → Chattanooga
Timetable, Atlanta time
18:50WN 239 from St Louis at the gate
14:30DL 1892 to Chattanooga leaves the gate
19 h 40 apart on the timetable, overnight
DL 1892 leaves 19 h 40 after WN 239 arrives on the timetable: more than half a day, so not a connection we count.