Complex sentence: According to Vasari, Michelangelo saw the original and praised Titian's use of colour in the Madrid painting, though later, in private, was critical of Titian's draftsmanship.
Split into simpler sentences: According to Vasari, Michelangelo saw the original and praised Titian's use of colour in the Madrid painting. Later, in private, he was critical of Titian's draftsmanship.