DL 1237 then F9 3508 at Atlanta
Sioux Falls → Atlanta → Orlando
Timetable, Atlanta time
09:00DL 1237 from Sioux Falls at the gate
01:03F9 3508 to Orlando leaves the gate
16 h 03 apart on the timetable, overnight
F9 3508 leaves 16 h 03 after DL 1237 arrives on the timetable: more than half a day, so not a connection we count.