I’ve had my problems with conductor Daniele Gatti. I’ve heard him conduct the Boston Symphony Orchestra five times in the last decade, and have always been disappointed. He’s regarded as a serious musician, a thinker. But his live performances rarely arouse excitement. Even his Verdi Requiem this past season seemed plodding and surprisingly unidiomatic for an Italian conductor. His tempos tend to be on the slow side, but some major bandleaders—I’m thinking especially of Otto Klemperer, or even James Levine—convey the profundity of that slowness while also creating either enormous tension or vast spaciousness. Or both.