AA 820 then DL 5442 at Atlanta
Dallas-Fort Worth → Atlanta → Allentown
Timetable, Atlanta time
10:22AA 820 from Dallas-Fort Worth at the gate
09:58DL 5442 to Allentown leaves the gate
23 h 36 apart on the timetable, overnight
DL 5442 leaves 23 h 36 after AA 820 arrives on the timetable: more than half a day, so not a connection we count.