DL 418 then UA 6047 at Atlanta
Charlotte → Atlanta → Chicago O'Hare
Timetable, Atlanta time
11:11DL 418 from Charlotte at the gate
11:05UA 6047 to Chicago O'Hare leaves the gate
23 h 54 apart on the timetable, overnight
UA 6047 leaves 23 h 54 after DL 418 arrives on the timetable: more than half a day, so not a connection we count.