TK 4951 then TK 1991 at Istanbul
Antalya → Istanbul → Manchester
Timetable, Istanbul time
15:15TK 4951 from Antalya at the gate
11:35TK 1991 to Manchester leaves the gate
20 h 20 apart on the timetable, overnight
TK 1991 leaves 20 h 20 after TK 4951 arrives on the timetable: more than half a day, so not a connection we count.