F9 2483 then DL 819 at Atlanta
Miami → Atlanta → San Diego
Timetable, Atlanta time
07:20F9 2483 from Miami at the gate
19:23DL 819 to San Diego leaves the gate
12 h 03 apart on the timetable
DL 819 leaves 12 h 03 after F9 2483 arrives on the timetable: more than half a day, so not a connection we count.