Snake could feel him from a mile away, that's how obvious the other is.
So when the stare lands he turns to make the man aware, I know you're there, he's not only met with reluctant confidence but also the nagging feeling that he knows this person from somewhere? where? when? Snake isn't one to forget people, or faces.
While he searches his memory, this... unknown man finds it in himself to not only walk over but sit across from him- quite the move, one that he had been guilty of in the past. Shows your interest in the other person, kind of ballsy, it depends on how this guy pulls it off. So Snake stays quiet, and lets him work his "magic"
Which, 'Elliott' as he presents himself does, pulling a little card- eventually Snake takes it, pockets it.
Is this what this reunion is all about?
“So you do recognise me! Was I the man of your dreams after all?”
Ballsy, indeed. but charming in a way that cracks Snake's ever serious facade, he laughs something bright, it almost looks out of place on him- promply he brings a hand up to cover said laugh in what's certainly a bad habit.
"Mirage or Elliott? Which one is it?" he starts once the laughter dies down, and dances around the question- just to see what this guy has up his sleeve "Well, you came here looking for me- so the question should be if I ever left yours."