DL 9951 then AA 3357 at Atlanta
Queretaro → Atlanta → Washington National
Timetable, Atlanta time
20:38DL 9951 from Queretaro at the gate
14:33AA 3357 to Washington National leaves the gate
17 h 55 apart on the timetable, overnight
AA 3357 leaves 17 h 55 after DL 9951 arrives on the timetable: more than half a day, so not a connection we count.