UA 947 then TK 188 at Dulles
Amsterdam → Washington → Istanbul
Timetable, Washington time
14:00UA 947 from Amsterdam at the gate
13:30TK 188 to Istanbul leaves the gate
23 h 30 apart on the timetable, overnight
TK 188 leaves 23 h 30 after UA 947 arrives on the timetable: more than half a day, so not a connection we count.