DL 9951 then DL 2086 at Atlanta
Queretaro → Atlanta → Des Moines
Timetable, Atlanta time
20:38DL 9951 from Queretaro at the gate
16:52DL 2086 to Des Moines leaves the gate
20 h 14 apart on the timetable, overnight
DL 2086 leaves 20 h 14 after DL 9951 arrives on the timetable: more than half a day, so not a connection we count.