DL 1179 then DL 9963 at Atlanta
San Diego → Atlanta → Queretaro
Timetable, Atlanta time
15:15DL 1179 from San Diego at the gate
09:30DL 9963 to Queretaro leaves the gate
18 h 15 apart on the timetable, overnight
DL 9963 leaves 18 h 15 after DL 1179 arrives on the timetable: more than half a day, so not a connection we count.