OO 225 then ET 3511 at O'Hare
Richmond → Chicago → Muscat
Timetable, Chicago time
11:48OO 225 from Richmond at the gate
09:05ET 3511 to Muscat leaves the gate
21 h 17 apart on the timetable, overnight
ET 3511 leaves 21 h 17 after OO 225 arrives on the timetable: more than half a day, so not a connection we count.