TK 775 then GQ 671 at Istanbul
Muscat → Istanbul → Athens
Timetable, Istanbul time
06:55TK 775 from Muscat at the gate
22:45GQ 671 to Athens leaves the gate
15 h 50 apart on the timetable
GQ 671 leaves 15 h 50 after TK 775 arrives on the timetable: more than half a day, so not a connection we count.