Why can Renoir's Luncheon of the Boating Party be viewed as a response to Émile Zola's challenge for the Impressionists to create more complex paintings?

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The interlocking triangles connecting the figures in Renoir's Luncheon of the Boating Party creates a sense of composition and makes the painting more complex, fulfilling Zola's challenge for the Impressionists to create more complex paintings. The strong outlines of the figures and the use of identifiable people are common characteristics of Impressionist paintings and not necessarily a response to Zola's challenge. There is no clear imitation of a Rubens' genre painting in Renoir's Luncheon of the Boating Party.

Why Can Renoir's Luncheon of the Boating Party Be Viewed