DL 9951 then DL 653 at Atlanta
Queretaro → Atlanta → Salt Lake City
Timetable, Atlanta time
20:38DL 9951 from Queretaro at the gate
17:58DL 653 to Salt Lake City leaves the gate
21 h 20 apart on the timetable, overnight
DL 653 leaves 21 h 20 after DL 9951 arrives on the timetable: more than half a day, so not a connection we count.