AA 3815 then K4 812 at O'Hare
Hartford → Chicago → Anchorage
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
17:30K4 812 to Anchorage leaves the gate
21 h 15 apart on the timetable, overnight
K4 812 leaves 21 h 15 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.