UA 2131 then DL 9963 at Atlanta
San Francisco → Atlanta → Queretaro
Timetable, Atlanta time
16:27UA 2131 from San Francisco at the gate
09:30DL 9963 to Queretaro leaves the gate
17 h 03 apart on the timetable, overnight
DL 9963 leaves 17 h 03 after UA 2131 arrives on the timetable: more than half a day, so not a connection we count.