Ionised gas morphology (traced by the 259 GHz continuum) compared to the dusty outflow cone (traced by the mid-IR N-band continuum from Isbell et al. 2022, top panel) and the accretion disc and molecular outflow (traced by the 22 GHz mega-masers from McCallum et al. 2009, middle panel). The B6LB 259 GHz continuum (robust parameter   = 0.5) is drawn in the top panel as cyan contours at [4, 8, 16, 32, 64, 128, 256, 512]  ×  rms, with rms = 0.013 mJy/beam. The B6LB and N-band continuum synthesised beam sizes are shown on the bottom left and right, respectively. The middle panel shows the higher resolution (robust parameter = −1) B6LB continuum map with contour levels at [2, 4, 8, 16, 32, 64, 128]  ×  rms, with rms = 0.048 mJy/beam. Overlaid on the middle panel are the 22 GHz maser spots that trace the Keplerian disc (black edge) and the outflow (white edge). The maser spots have a global positional uncertainty of ∼6 mas. The solid cyan lines indicate the fitted outflow trajectories, whereas the dashed cyan lines show these trajectories extrapolated to the maser disc. The orange cross indicates the maser kinematic centre, while the cyan cross indicates the AGN position. The bottom panel shows a schematic representation of the proposed outflow cone geometry. The sketched torus component is based on the B6LB torus morphology in Fig. 3. The grey labels ‘N’ (near) and ‘F’ (far) indicate the respective sides of the warped accretion disc: N marks the near side that is in the line of sight of the AGN, while F corresponds to the far side that is in shadow, as discussed in Sect. 4.2.3.