It does no harm, once in a while, to assume that the creators of an opera actually know what they’re doing. Puccini was clear that he wanted the three one-act operas of Il trittico to be performed together and in a particular order. Promoters and directors have had other ideas, and between the wars it was apparently common to perform the triptych’s comic final opera, Gianni Schicchi, in a double bill with Strauss’s Salome, which must have been an interesting night out.