DL 9941 then WN 257 at Atlanta
Queretaro → Atlanta → Washington National
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
17:40WN 257 to Washington National leaves the gate
21 h 57 apart on the timetable, overnight
WN 257 leaves 21 h 57 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.