The Denon link IS a special cable . You cannot use a 'normal' cable, as it does not work. Denon must have switched some wires around from one end to the other to make certain they get to sell the overpriced special "Denon link" cables.
I own a Denon DVD5910 and a Denon 4806 and use the Denon Link.
I own a Denon DVD5910 and a Denon 4806 and use the Denon Link.