Gregor mutely accepts whatever he's given for his drink and isn't about to complain (he is not naturally fussy) though he has to admit some curiosity when he sees what Miles adds. He's never heard of that flavor either. Seeing him experiment provokes him to do the same himself, and he adds hazelnut creamer, no sugar, which ends up being perfect.

But, okay, on task.

"Blood samples then meet-and-greet, and reconvene later for results?" Gregor suggests.