AA 820 then DL 5375 at Atlanta
Dallas-Fort Worth → Atlanta → Montgomery
Timetable, Atlanta time
10:22AA 820 from Dallas-Fort Worth at the gate
23:15DL 5375 to Montgomery leaves the gate
12 h 53 apart on the timetable
DL 5375 leaves 12 h 53 after AA 820 arrives on the timetable: more than half a day, so not a connection we count.