The voice is absent of emotion. It is as if someone has taken the impression of words and let them play out over the line, like an old recording someone forgot to shut off.
"Your English is better."
The response completely refuses to acknowledge the threat or idea that the number shouldn't have been an attainable one. The feel of the words doesn't hint at deliberate obfuscation, more like non-sequitors.
It is so quiet that the sound of the fluorescent bulbs that hang in fleets from the base's ceiling might be heard. The pause doesn't indicate he wants an answer. As always, he's processing information, trying to determine the best course of action.