IJ 834 then JL 56 at Narita
Sapporo → Tokyo → Chicago
Timetable, Tokyo time
10:55IJ 834 from Sapporo at the gate
10:45JL 56 to Chicago leaves the gate
23 h 50 apart on the timetable, overnight
JL 56 leaves 23 h 50 after IJ 834 arrives on the timetable: more than half a day, so not a connection we count.