IJ 834 then MM 355 at Narita
Sapporo → Tokyo → Fukuoka
Timetable, Tokyo time
10:55IJ 834 from Sapporo at the gate
10:10MM 355 to Fukuoka leaves the gate
23 h 15 apart on the timetable, overnight
MM 355 leaves 23 h 15 after IJ 834 arrives on the timetable: more than half a day, so not a connection we count.