CI 5240 then UA 2371 at O'Hare
Anchorage → Chicago → Cancún
Timetable, Chicago time
15:04CI 5240 from Anchorage at the gate
08:40UA 2371 to Cancún leaves the gate
17 h 36 apart on the timetable, overnight
UA 2371 leaves 17 h 36 after CI 5240 arrives on the timetable: more than half a day, so not a connection we count.