In Stage two, Times Square, go to the part where there's a room filled with gold. Pause time and get all the gold and time crystals in the area, except the three hearts on a broken platform. Watch him sweep the crystals on the broken platform. If you did this correctly, the medal shouldn't be there, but the Benito Brother will be standing on his air bike and cheering and slowly floats down until he hits the ground and disappears in a time stream.