From the second piece of level 1-1 where it's a flower,jumping to DK'S house whitout touchin the ground above. I tried it like 30 minutes but no. I wasn't able doing it .Rolling and, jumping in mid air, all with Diddy Kong . For me It was too close i touched the platform with the head, and falled ,several times , i think it 'is possible but so much hard,try yourselves and comment