To say that he's recognised is an understatement, but, still, Lt. Cdr. Terzen T'Karr, formerly of the USS Pathfinder, allows him a while to be by himself before disturbing him.

And, even then, it's in the most unobtrusive, respectable way possible. He walks up behind Spock, making sure his reflection is visible in the window.

"Excuse me, Ambassador?" He asks, politely. "Is everything okay?"

Spock will find himself talking to someone in Operations Gold, with the black eyes of a Betazoid, but the spots, faded, but still obvious, of a Trill.