DL 777 then DL 9963 at Atlanta
Las Vegas → Atlanta → Queretaro
Timetable, Atlanta time
17:49DL 777 from Las Vegas at the gate
09:30DL 9963 to Queretaro leaves the gate
15 h 41 apart on the timetable, overnight
DL 9963 leaves 15 h 41 after DL 777 arrives on the timetable: more than half a day, so not a connection we count.