DL 640 then DL 996 at Atlanta
San Francisco → Atlanta → Los Angeles
Timetable, Atlanta time
15:35DL 640 from San Francisco at the gate
07:00DL 996 to Los Angeles leaves the gate
15 h 25 apart on the timetable, overnight
DL 996 leaves 15 h 25 after DL 640 arrives on the timetable: more than half a day, so not a connection we count.