BR 646 then QF 7554 at O'Hare
Anchorage → Chicago → Dallas-Fort Worth
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
13:37QF 7554 to Dallas-Fort Worth leaves the gate
20 h 27 apart on the timetable, overnight
QF 7554 leaves 20 h 27 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.