K4 221 then AA 1976 at O'Hare
Anchorage → Chicago → Puerto Vallarta
Timetable, Chicago time
13:41K4 221 from Anchorage at the gate
08:43AA 1976 to Puerto Vallarta leaves the gate
19 h 02 apart on the timetable, overnight
AA 1976 leaves 19 h 02 after K4 221 arrives on the timetable: more than half a day, so not a connection we count.