DL 1883 then DL 5442 at Atlanta
Memphis → Atlanta → Allentown
Timetable, Atlanta time
10:51DL 1883 from Memphis at the gate
09:58DL 5442 to Allentown leaves the gate
23 h 07 apart on the timetable, overnight
DL 5442 leaves 23 h 07 after DL 1883 arrives on the timetable: more than half a day, so not a connection we count.