F9 3409 then DL 1328 at Atlanta
Detroit → Atlanta → Miami
Timetable, Atlanta time
17:16F9 3409 from Detroit at the gate
16:33DL 1328 to Miami leaves the gate
23 h 17 apart on the timetable, overnight
DL 1328 leaves 23 h 17 after F9 3409 arrives on the timetable: more than half a day, so not a connection we count.