ET 3608 then UA 2148 at O'Hare
Anchorage → Chicago → Denver
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
21:00UA 2148 to Denver leaves the gate
13 h 44 apart on the timetable
UA 2148 leaves 13 h 44 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.