MILAN (AP).- Miuccia Prada never met her designing compatriot Elsa Schiaparelli in life but the two are being united in an exhibit on the sidelines of Milan Fashion Week. The Metropolitan Museum of Art has paired designs by the two female Italian stylists from decidedly different eras in what it calls “an impossible conversation” — impossible because it never happened. Prada, 62, expressed surprise when asked if she had ever met Schiaparelli — only to be reminded that she had died in 1973 at age 83. The older designer’s heyday was in the 1930s, making her memory much more remote. “When I think of her, I think of the past,” Prada told reporters Friday after the exhibit was introduced. The ballroom in Milan’s Royal Palace, which is adorned with statues damaged in