CK 227 then UA 3910 at O'Hare
Seattle (SEA) → Chicago → Newark
Timetable, Chicago time
12:56CK 227 from Seattle (SEA) at the gate
07:30UA 3910 to Newark leaves the gate
18 h 34 apart on the timetable, overnight
UA 3910 leaves 18 h 34 after CK 227 arrives on the timetable: more than half a day, so not a connection we count.