TK 1128 then GQ 671 at Istanbul
Sofia → Istanbul → Athens
Timetable, Istanbul time
14:05TK 1128 from Sofia at the gate
10:30GQ 671 to Athens leaves the gate
20 h 25 apart on the timetable, overnight
GQ 671 leaves 20 h 25 after TK 1128 arrives on the timetable: more than half a day, so not a connection we count.