DL 3155 then DL 9936 at Atlanta
Gulfport → Atlanta → Queretaro
Timetable, Atlanta time
08:55DL 3155 from Gulfport at the gate
08:00DL 9936 to Queretaro leaves the gate
23 h 05 apart on the timetable, overnight
DL 9936 leaves 23 h 05 after DL 3155 arrives on the timetable: more than half a day, so not a connection we count.