DL 748 then DL 9963 at Atlanta
Las Vegas → Atlanta → Queretaro
Timetable, Atlanta time
19:24DL 748 from Las Vegas at the gate
09:30DL 9963 to Queretaro leaves the gate
14 h 06 apart on the timetable, overnight
DL 9963 leaves 14 h 06 after DL 748 arrives on the timetable: more than half a day, so not a connection we count.