CA 471 then NH 8508 at Bangkok
Chengdu → Bangkok → Tokyo Narita
Timetable, Bangkok time
16:40CA 471 from Chengdu at the gate
04:47NH 8508 to Tokyo Narita leaves the gate
12 h 07 apart on the timetable, overnight
NH 8508 leaves 12 h 07 after CA 471 arrives on the timetable: more than half a day, so not a connection we count.