DL 8849 then DL 1579 at Atlanta
Memphis → Atlanta → Miami
Timetable, Atlanta time
14:32DL 8849 from Memphis at the gate
12:50DL 1579 to Miami leaves the gate
22 h 18 apart on the timetable, overnight
DL 1579 leaves 22 h 18 after DL 8849 arrives on the timetable: more than half a day, so not a connection we count.