CI 5346 then F9 2552 at Atlanta
San Francisco → Atlanta → Philadelphia
Timetable, Atlanta time
21:14CI 5346 from San Francisco at the gate
16:11F9 2552 to Philadelphia leaves the gate
18 h 57 apart on the timetable, overnight
F9 2552 leaves 18 h 57 after CI 5346 arrives on the timetable: more than half a day, so not a connection we count.