Y4 702 then CX 99 at O'Hare
Mexico City → Chicago → Anchorage
Timetable, Chicago time
22:13Y4 702 from Mexico City at the gate
19:15CX 99 to Anchorage leaves the gate
21 h 02 apart on the timetable, overnight
CX 99 leaves 21 h 02 after Y4 702 arrives on the timetable: more than half a day, so not a connection we count.