Best-fit modelling of the TNG/LR-B 2022 spectrum (left). The AGN continuum is totally unconstrained and overwhelmed by the host galaxy emission. Zoom-over the spectral window 6250 − 6900 Å around the Hα line (top-right). Best-fit results from the re-modelling over the narrower wavelength range (i.e. 6250 − 6900) of the VHR-R data (bottom-right). The comparison between the two right panels shows how sensitive the broad components are to the continuum level, which, in turn, strongly depends on the spectral range selected for the fit.