AA 2891 then DL 4707 at Atlanta
Miami → Atlanta → Springfield
Timetable, Atlanta time
09:47AA 2891 from Miami at the gate
09:45DL 4707 to Springfield leaves the gate
23 h 58 apart on the timetable, overnight
DL 4707 leaves 23 h 58 after AA 2891 arrives on the timetable: more than half a day, so not a connection we count.