The difference was rather subtle, but the aura of the prototype definitely shifted when Taon Melin interfaced with it for the first time.
According to his theories on the X-Factor, Ves believed this was because of a strong compatibility between the mech and mech pilot.
Because the X-Factor of the Transcendent Messenger was unusually pure and one-dimensional, the changes a mech pilot introduced to the X-Factor became very obvious.
To Ves, it seemed that Taon Melin's intensity carried over to the mech through the man-machine connection.
It was like a drop of color fell into a clear glass of water. The edge added to the hero mech's X-Factor was a combination of both the mech and mech pilot.
As the newly-activated prototype proceeded to perform basic actions to test the integrity and range of motion of its frame, Ves thought of the implications of his latest observation.