DL 2779 then CI 5345 at Atlanta
Boston → Atlanta → San Francisco
Timetable, Atlanta time
15:10DL 2779 from Boston at the gate
12:45CI 5345 to San Francisco leaves the gate
21 h 35 apart on the timetable, overnight
CI 5345 leaves 21 h 35 after DL 2779 arrives on the timetable: more than half a day, so not a connection we count.