1962: L'eclisse ([The] Eclipse)

I recently complained that Antonioni's 1960 L'avventura, while visually brilliant, was too "deliberately paced and loosely plotted" for my taste, but compared to L'eclisse, released two years later and dealing with a woman who breaks up with her socialist fiancé and soon starts a relationship with a superficial and selfish stock-broker, it feels as though the earlier film was written by Billy Wilder and I.A.L. Diamond. In terms of visuals, Antonioni exchanges L'avventura's old churches and castles for modernist architecture, which, while meant to look cold, perhaps even dehumanizing, still makes for extremely attractive frames. Even so, I found much of the film to be a bit of a bore, but the ending must be one of the greatest in the history of cinema. How do we squeeze all that into a single mark? I'll go for a straight 6, but am not sure this is the right choice.