DL 1477 then DL 9963 at Atlanta
Chicago O'Hare → Atlanta → Queretaro
Timetable, Atlanta time
18:54DL 1477 from Chicago O'Hare at the gate
09:30DL 9963 to Queretaro leaves the gate
14 h 36 apart on the timetable, overnight
DL 9963 leaves 14 h 36 after DL 1477 arrives on the timetable: more than half a day, so not a connection we count.