DL 640 then DL 1892 at Atlanta
San Francisco → Atlanta → Chattanooga
Timetable, Atlanta time
15:33DL 640 from San Francisco at the gate
14:30DL 1892 to Chattanooga leaves the gate
22 h 57 apart on the timetable, overnight
DL 1892 leaves 22 h 57 after DL 640 arrives on the timetable: more than half a day, so not a connection we count.