DL 2168 then DL 475 at Atlanta
Key West → Atlanta → Jackson (Mississippi)
Timetable, Atlanta time
20:19DL 2168 from Key West at the gate
19:30DL 475 to Jackson (Mississippi) leaves the gate
23 h 11 apart on the timetable, overnight
DL 475 leaves 23 h 11 after DL 2168 arrives on the timetable: more than half a day, so not a connection we count.