DL 9941 then DL 850 at Atlanta
Queretaro → Atlanta → Washington National
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
15:35DL 850 to Washington National leaves the gate
19 h 52 apart on the timetable, overnight
DL 850 leaves 19 h 52 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.