DL 731 then UA 516 at Atlanta
Wilmington (ILM) → Atlanta → Chicago O'Hare
Timetable, Atlanta time
16:07DL 731 from Wilmington (ILM) at the gate
15:32UA 516 to Chicago O'Hare leaves the gate
23 h 25 apart on the timetable, overnight
UA 516 leaves 23 h 25 after DL 731 arrives on the timetable: more than half a day, so not a connection we count.