DL 4991 then DL 9963 at Atlanta
Alexandria → Atlanta → Queretaro
Timetable, Atlanta time
14:34DL 4991 from Alexandria at the gate
09:30DL 9963 to Queretaro leaves the gate
18 h 56 apart on the timetable, overnight
DL 9963 leaves 18 h 56 after DL 4991 arrives on the timetable: more than half a day, so not a connection we count.