DL 9941 then DL 2738 at Atlanta
Queretaro → Atlanta → Chicago O'Hare
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
15:50DL 2738 to Chicago O'Hare leaves the gate
20 h 07 apart on the timetable, overnight
DL 2738 leaves 20 h 07 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.