CV 278 then UA 359 at O'Hare
Anchorage → Chicago → Mexico City
Timetable, Chicago time
14:22CV 278 from Anchorage at the gate
08:55UA 359 to Mexico City leaves the gate
18 h 33 apart on the timetable, overnight
UA 359 leaves 18 h 33 after CV 278 arrives on the timetable: more than half a day, so not a connection we count.