X-shooter rest-frame optical spectrum centred on [FeVII]λ6087. Left: data. The red vertical line marks the expected location of the line for z_sys. The line is clearly blueshifted. Middle: data with fit (red) and residuals (blue, shifted vertically for visualisation). Right: data with the two kinematic components isolated in the fits. The FWHM and ΔV relative to z_sys correspond to the broad most blueshited component. Flux in arbitrary units.