UA 4530 then ET 3511 at O'Hare
Chattanooga → Chicago → Muscat
Timetable, Chicago time
19:05UA 4530 from Chattanooga at the gate
09:05ET 3511 to Muscat leaves the gate
14 h apart on the timetable, overnight
ET 3511 leaves 14 h after UA 4530 arrives on the timetable: more than half a day, so not a connection we count.