CK 625 then UA 3418 at O'Hare
Seattle (SEA) → Chicago → Indianapolis
Timetable, Chicago time
16:33CK 625 from Seattle (SEA) at the gate
16:30UA 3418 to Indianapolis leaves the gate
23 h 57 apart on the timetable, overnight
UA 3418 leaves 23 h 57 after CK 625 arrives on the timetable: more than half a day, so not a connection we count.