AA 1260 then CX 2095 at O'Hare
Boston → Chicago → Anchorage
Timetable, Chicago time
18:55AA 1260 from Boston at the gate
10:00CX 2095 to Anchorage leaves the gate
15 h 05 apart on the timetable, overnight
CX 2095 leaves 15 h 05 after AA 1260 arrives on the timetable: more than half a day, so not a connection we count.