K4 523 then ET 3511 at O'Hare
Anchorage → Chicago → Muscat
Timetable, Chicago time
16:45K4 523 from Anchorage at the gate
09:05ET 3511 to Muscat leaves the gate
16 h 20 apart on the timetable, overnight
ET 3511 leaves 16 h 20 after K4 523 arrives on the timetable: more than half a day, so not a connection we count.