AA 2891 then DL 2597 at Atlanta
Miami → Atlanta → Montréal
Timetable, Atlanta time
09:47AA 2891 from Miami at the gate
09:00DL 2597 to Montréal leaves the gate
23 h 13 apart on the timetable, overnight
DL 2597 leaves 23 h 13 after AA 2891 arrives on the timetable: more than half a day, so not a connection we count.