AA 3049 then ET 3511 at O'Hare
San Francisco → Chicago → Muscat
Timetable, Chicago time
20:20AA 3049 from San Francisco at the gate
09:05ET 3511 to Muscat leaves the gate
12 h 45 apart on the timetable, overnight
ET 3511 leaves 12 h 45 after AA 3049 arrives on the timetable: more than half a day, so not a connection we count.