AS 407 then UA 3910 at O'Hare
Seattle (SEA) → Chicago → Newark
Timetable, Chicago time
15:00AS 407 from Seattle (SEA) at the gate
07:30UA 3910 to Newark leaves the gate
16 h 30 apart on the timetable, overnight
UA 3910 leaves 16 h 30 after AS 407 arrives on the timetable: more than half a day, so not a connection we count.