The tangled “private lives” of divorced but ultimately reunited couple Amanda and Elyot, in Noël Coward’s “Private Lives,” are almost shockingly physical in director KJ Sanchez’s production. This American Conservatory Theater season opener of the arch, 1930 comedy feels unexpectedly fresh and exuberant. It whizzes by, getting better—funnier and deeper and more surprising—act by act. […]
