Not to be a Johnny Raincloud, but there are only a few ways to design a banner. The Aztecs and Egyptians both built pyramids, but that doesn't mean there was any contact between them. They both came up with the idea on their own. Me thinks this is most likely what happened here.
“He was on the other side of the court, screaming: ‘Good shot, Kev!’” Durant said, shaking his head in delight. “I’m thinking, this guy’s an All-American type of teammate right there.”