CK 227 then UA 5855 at O'Hare
Seattle (SEA) → Chicago → Oklahoma City
Timetable, Chicago time
13:44CK 227 from Seattle (SEA) at the gate
13:30UA 5855 to Oklahoma City leaves the gate
23 h 46 apart on the timetable, overnight
UA 5855 leaves 23 h 46 after CK 227 arrives on the timetable: more than half a day, so not a connection we count.