DL 9941 then DL 823 at Atlanta
Queretaro → Atlanta → San Francisco
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
14:49DL 823 to San Francisco leaves the gate
19 h 06 apart on the timetable, overnight
DL 823 leaves 19 h 06 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.