TK 6887 then TK 2138 at Istanbul
Tbilisi → Istanbul → Ankara
Timetable, Istanbul time
18:30TK 6887 from Tbilisi at the gate
10:00TK 2138 to Ankara leaves the gate
15 h 30 apart on the timetable, overnight
TK 2138 leaves 15 h 30 after TK 6887 arrives on the timetable: more than half a day, so not a connection we count.