CK 227 then UA 3499 at O'Hare
Seattle (SEA) → Chicago → Charlotte
Timetable, Chicago time
14:03CK 227 from Seattle (SEA) at the gate
13:55UA 3499 to Charlotte leaves the gate
23 h 52 apart on the timetable, overnight
UA 3499 leaves 23 h 52 after CK 227 arrives on the timetable: more than half a day, so not a connection we count.