AM 978 then CI 5345 at Atlanta
Monterrey → Atlanta → San Francisco
Timetable, Atlanta time
10:55AM 978 from Monterrey at the gate
23:46CI 5345 to San Francisco leaves the gate
12 h 51 apart on the timetable
CI 5345 leaves 12 h 51 after AM 978 arrives on the timetable: more than half a day, so not a connection we count.