CI 5240 then AA 1253 at O'Hare
Anchorage → Chicago → San Francisco
Timetable, Chicago time
15:04CI 5240 from Anchorage at the gate
06:45AA 1253 to San Francisco leaves the gate
15 h 41 apart on the timetable, overnight
AA 1253 leaves 15 h 41 after CI 5240 arrives on the timetable: more than half a day, so not a connection we count.