TK 713 then GQ 671 at Istanbul
Dhaka → Istanbul → Athens
Timetable, Istanbul time
13:15TK 713 from Dhaka at the gate
10:30GQ 671 to Athens leaves the gate
21 h 15 apart on the timetable, overnight
GQ 671 leaves 21 h 15 after TK 713 arrives on the timetable: more than half a day, so not a connection we count.