K4 601 then AA 3646 at O'Hare
Anchorage → Chicago → Tulsa
Timetable, Chicago time
01:45K4 601 from Anchorage at the gate
19:45AA 3646 to Tulsa leaves the gate
18 h apart on the timetable
AA 3646 leaves 18 h after K4 601 arrives on the timetable: more than half a day, so not a connection we count.