Matt Donnelly Senior Film Writer “In the next 45 minutes, we’re about to hear Gus speak more than he has in the last 40 years,” Vito Schnabel, the art world scion who is increasingly turning his head toward Hollywood, told a crowd at New York’s Tribeca Film Festival last week. He was there to moderate a conversation with American heavyweight filmmaker Gus Van Sant, who just directed Schnabel (and a pack of actors barreling toward Emmy nominations) in “Feud: Capote vs. The Swans.” That history, of a glittery New York whose underbelly was found in the bedrooms and hallways of the ruling class, took a back seat to Van Sant’s impactful career.