TK 6887 then TK 1843 at Istanbul
Tbilisi → Istanbul → Athens
Timetable, Istanbul time
18:30TK 6887 from Tbilisi at the gate
08:10TK 1843 to Athens leaves the gate
13 h 40 apart on the timetable, overnight
TK 1843 leaves 13 h 40 after TK 6887 arrives on the timetable: more than half a day, so not a connection we count.