K4 537 then AA 3646 at O'Hare
Anchorage → Chicago → Tulsa
Timetable, Chicago time
23:39K4 537 from Anchorage at the gate
19:05AA 3646 to Tulsa leaves the gate
19 h 26 apart on the timetable, overnight
AA 3646 leaves 19 h 26 after K4 537 arrives on the timetable: more than half a day, so not a connection we count.