DL 9951 then DL 366 at Atlanta
Queretaro → Atlanta → Phoenix
Timetable, Atlanta time
20:38DL 9951 from Queretaro at the gate
13:20DL 366 to Phoenix leaves the gate
16 h 42 apart on the timetable, overnight
DL 366 leaves 16 h 42 after DL 9951 arrives on the timetable: more than half a day, so not a connection we count.