KD 214 then AA 2537 at O'Hare
Anchorage → Chicago → Tucson
Timetable, Chicago time
23:24KD 214 from Anchorage at the gate
11:45AA 2537 to Tucson leaves the gate
12 h 21 apart on the timetable, overnight
AA 2537 leaves 12 h 21 after KD 214 arrives on the timetable: more than half a day, so not a connection we count.