SG 87 then TG 658 at Bangkok
New Delhi → Bangkok → Seoul
Timetable, Bangkok time
02:45SG 87 from New Delhi at the gate
23:25TG 658 to Seoul leaves the gate
20 h 40 apart on the timetable
TG 658 leaves 20 h 40 after SG 87 arrives on the timetable: more than half a day, so not a connection we count.