DL 1102 then DL 9963 at Atlanta
St Louis → Atlanta → Queretaro
Timetable, Atlanta time
17:05DL 1102 from St Louis at the gate
09:30DL 9963 to Queretaro leaves the gate
16 h 25 apart on the timetable, overnight
DL 9963 leaves 16 h 25 after DL 1102 arrives on the timetable: more than half a day, so not a connection we count.