BR 646 then AA 4799 at O'Hare
Anchorage → Chicago → Harrisburg
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
16:30AA 4799 to Harrisburg leaves the gate
23 h 20 apart on the timetable, overnight
AA 4799 leaves 23 h 20 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.