DL 957 then DL 9963 at Atlanta
Denver → Atlanta → Queretaro
Timetable, Atlanta time
19:14DL 957 from Denver at the gate
09:30DL 9963 to Queretaro leaves the gate
14 h 16 apart on the timetable, overnight
DL 9963 leaves 14 h 16 after DL 957 arrives on the timetable: more than half a day, so not a connection we count.