DL 9941 then DL 512 at Atlanta
Queretaro → Atlanta → Dallas
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
12:59DL 512 to Dallas leaves the gate
17 h 16 apart on the timetable, overnight
DL 512 leaves 17 h 16 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.