Kit Connor and Rachel Zegler lead the nihilistic, nonsensical “Romeo + Juliet.” Nearby, Julianna 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,

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.