DL 9941 then DL 1874 at Atlanta
Queretaro → Atlanta → Houston
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
14:37DL 1874 to Houston leaves the gate
18 h 54 apart on the timetable, overnight
DL 1874 leaves 18 h 54 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.