DL 495 then UA 324 at Atlanta
San Francisco → Atlanta → Chicago O'Hare
Timetable, Atlanta time
06:30DL 495 from San Francisco at the gate
22:00UA 324 to Chicago O'Hare leaves the gate
15 h 30 apart on the timetable
UA 324 leaves 15 h 30 after DL 495 arrives on the timetable: more than half a day, so not a connection we count.