ENTps will rarely look anybody in the eye; they tend to stare off into their vision of what could be.

ENTjs look everybody in the eye whenever they talk to them, unless they specifically desire to express emotional distance. Their eyes seem to shift very quickly in this regard; they often don't even move their heads, or only move them very slightly.

From these characteristics, it's very easy to tell ENTjs and ENTps apart from a VI standpoint.