A wide cut harvesting platform includes a rotary cutter bar having right- and left-hand outer and inner cutting units having respective inner and outer cutting discs at its opposite ends rotating in appropriate opposite directions for conveying cut crop from outer ends of the cutter bar to a central crop discharge path leading to a crop conditioning arrangement extending across the path. A first embodiment includes horizontal, right- and left-hand converging augers mounted so as to diverge forwardly above inner and outer cutting discs at the opposite ends of the cutter bar from locations at opposite sides of the discharge path and forward of the conditioner arrangement. A second embodiment includes first and second forwardly diverging augers like the first embodiment but being shorter and respectively terminating outwardly adjacent right- and left-hand converging drums respectively mounted to, and for rotating together with the right- and left-hand outer cutting discs.