K4 537 then AA 2554 at O'Hare
Anchorage → Chicago → Phoenix
Timetable, Chicago time
23:39K4 537 from Anchorage at the gate
18:59AA 2554 to Phoenix leaves the gate
19 h 20 apart on the timetable, overnight
AA 2554 leaves 19 h 20 after K4 537 arrives on the timetable: more than half a day, so not a connection we count.