BR 646 then ET 3511 at O'Hare
Anchorage → Chicago → Muscat
Timetable, Chicago time
09:50BR 646 from Anchorage at the gate
09:05ET 3511 to Muscat leaves the gate
23 h 15 apart on the timetable, overnight
ET 3511 leaves 23 h 15 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.