Whether or not it's optional (and whatever "well-acquainted" did or did not cover), Vanya kisses her cheek without hesitation, even going so far as lightly resting his hand on her arm for a moment before he takes a respectful step back. "Doubtless he was urgently needed elsewhere," of Isaac. It's incredibly mild, but it's closer to archness than Strange has probably heard from him.

"I believe it's the doctor's first time to Nevarra," he adds, before anyone can linger over his comment. "You will find him an attentive student of culture." Also he's cognizant that Benevenuta is well aware of Strange's connection to Gwenaëlle, so he is trusting her to play at least somewhat nice in a way he might not, absent that context.