It’s Chekhov 101 to say his characters inhabit separate worlds that rarely converge. All those rueful doctors, vain landowners, stoic laborers, and pretentious artists jabber across the samovar without really connecting or changing. Sure, they level pistols at each other (and themselves) or profess undying love, but such flashes of passion smack of solipsistic play-acting. Therein lies the comedy dusted with melancholy. Still, if Chekhov’s people are not in the same play, you hope the actors inhabiting them will be.