DL 343 then DL 9936 at Atlanta
Washington National → Atlanta → Queretaro
Timetable, Atlanta time
09:55DL 343 from Washington National at the gate
08:00DL 9936 to Queretaro leaves the gate
22 h 05 apart on the timetable, overnight
DL 9936 leaves 22 h 05 after DL 343 arrives on the timetable: more than half a day, so not a connection we count.