TK 6951 then W6 2430 at Istanbul
Kars → Istanbul → Budapest
Timetable, Istanbul time
17:45TK 6951 from Kars at the gate
09:55W6 2430 to Budapest leaves the gate
16 h 10 apart on the timetable, overnight
W6 2430 leaves 16 h 10 after TK 6951 arrives on the timetable: more than half a day, so not a connection we count.