AA 2891 then DL 4991 at Atlanta
Miami → Atlanta → Alexandria
Timetable, Atlanta time
10:28AA 2891 from Miami at the gate
10:10DL 4991 to Alexandria leaves the gate
23 h 42 apart on the timetable, overnight
DL 4991 leaves 23 h 42 after AA 2891 arrives on the timetable: more than half a day, so not a connection we count.