IB 341 then BR 647 at O'Hare
Madrid → Chicago → Anchorage
Timetable, Chicago time
14:55IB 341 from Madrid at the gate
12:10BR 647 to Anchorage leaves the gate
21 h 15 apart on the timetable, overnight
BR 647 leaves 21 h 15 after IB 341 arrives on the timetable: more than half a day, so not a connection we count.