TK 6037 then F9 3647 at O'Hare
Istanbul → Chicago → Las Vegas
Timetable, Chicago time
05:05TK 6037 from Istanbul at the gate
17:15F9 3647 to Las Vegas leaves the gate
12 h 10 apart on the timetable
F9 3647 leaves 12 h 10 after TK 6037 arrives on the timetable: more than half a day, so not a connection we count.