AA 2609 then DL 5258 at Atlanta
Miami → Atlanta → Jackson (Mississippi)
Timetable, Atlanta time
20:15AA 2609 from Miami at the gate
18:00DL 5258 to Jackson (Mississippi) leaves the gate
21 h 45 apart on the timetable, overnight
DL 5258 leaves 21 h 45 after AA 2609 arrives on the timetable: more than half a day, so not a connection we count.