Is it sheer coincidence that Gottfried Helnwein, the Austrian artist, created a portrait of both the German and the American? Coincidence, that he captured Warhol as a disturbing spectre on photograph, but painted Beuys? And that he then photographed the painted portrait of Beuys in the hands of Arno Breker, Adolf Hitler's favourite sculptor? There are weighty reasons for considering Helnwein the legitimate heir to Beuys and Warhol.