DL 8902 then DL 1323 at Atlanta
Pittsburgh → Atlanta → Miami
Timetable, Atlanta time
01:22DL 8902 from Pittsburgh at the gate
13:25DL 1323 to Miami leaves the gate
12 h 03 apart on the timetable
DL 1323 leaves 12 h 03 after DL 8902 arrives on the timetable: more than half a day, so not a connection we count.