DL 731 then DL 1189 at Atlanta
Wilmington (ILM) → Atlanta → Allentown
Timetable, Atlanta time
16:07DL 731 from Wilmington (ILM) at the gate
15:16DL 1189 to Allentown leaves the gate
23 h 09 apart on the timetable, overnight
DL 1189 leaves 23 h 09 after DL 731 arrives on the timetable: more than half a day, so not a connection we count.