Artistic representation of the orbit (silver ellipse) of the secondary component of ExtEV (dark blue circle) around the primary component (light blue circle near the center). The size of the orbit and both components are to scale. The orientation of the orbit corresponds to the view of the ExtEV in the sky (i.e., as seen by the observer on Earth). The primary component is the source of a slow but dense stellar wind (semi-transparent spheres, concentric with the primary component), which, after colliding with the surface of the wind of the secondary component, forms a WWC cone, a turbulent structure, with its apex located near the secondary component. Three orbital phases are labeled, corresponding to: the superior conjunction (A), periastron passage (B), and inferior conjunction (C). More details can be found in the main text.