CA 3103 then UA 5478 at O'Hare
Anchorage → Chicago → Detroit
Timetable, Chicago time
08:54CA 3103 from Anchorage at the gate
21:30UA 5478 to Detroit leaves the gate
12 h 36 apart on the timetable
UA 5478 leaves 12 h 36 after CA 3103 arrives on the timetable: more than half a day, so not a connection we count.