Spectral modelling of the Hβregion of the low-luminosity composite spectrum assuming only one NLR component (left) and two NLR components (right), one of them accounting for an outflow component. The colour-coding is the same as in Fig.2. The improvement in the best fit BIC is significant (ΔBIC=-116). The FWHM of the broad [O III] (azure) is significantly smaller than that of the broad Hβsupposedly tracing the BLR (red).