In the promotional run-up to director Sam Gold’s production of “Romeo + Juliet,” much effort was made to promote the intensity of its young stars’ feelings, justifying the exorcism of that prosaic ampersand in the title in favor of an additive plus sign.

Kit Connor and Rachel Zegler lead the nihilistic, nonsensical “Romeo + Juliet.” Nearby, Juliana Margulies and Peter Gallagher star in the sentimental “Left on Tenth.”

You might think of the new Broadway production of “Romeo and Juliet” as a teddy-bear picnic—with ecstasy as party favors. Actually the ecstasy is only a conjecture, but both the stage and the lobby of the Circle in the Square,