Khan hadn't really been in contact with the Thilku Empire during his search for the Nak. Still, his status didn't require updates from his side. When the Emperor had called his mission classified, he meant that.
Moreover, the Thilku Empire had kept track of Khan, and he had been far from silent in the past years. The amount of information released about the Nak, his nightmares, and the Scarlet Eyes had been numerous, and the video about the battle against the two alien scouts took the crown there.
Therefore, the Thilku Empire didn't doubt Khan's actions. It never came close to that, and Lord Envoy now had the confirmation the Emperor had been waiting for. Lord Blue Shaman and Lord Special Emissary had returned victorious from the mission.
"[Good job, Lord Blue Shaman]," Lord Envoy stated, traces of curiosity toward Khan still shining in his eyes. "[I'll brief the Emperor]."