B6 519 then CI 5345 at Atlanta
New York JFK → Atlanta → San Francisco
Timetable, Atlanta time
09:16B6 519 from New York JFK at the gate
01:58CI 5345 to San Francisco leaves the gate
16 h 42 apart on the timetable, overnight
CI 5345 leaves 16 h 42 after B6 519 arrives on the timetable: more than half a day, so not a connection we count.