Adaption of Fig. 9 in Surcis et al. (2020) with the (coincident) positions of the maser emission at 183 and 380 GHz (magenta cross) overlaid on the VLBI contour map of the L-band continuum emission in TXS 2226 (Taylor et al. 2004). The size of the magenta cross (solid and dashed, in the left and right panel, respectively) is comparable with the absolute astrometric precision estimated for our ALMA observations (∼10 mas; see Sect. 4.2). The size of the brown cross in the right panel is the relative position uncertainty of the (sub)millimeter masers (1 mas; Sect. 4.2). The red and blue crosses are the 22 GHz maser spots detected through VLBA measurements (for details, see Surcis et al. 2020, and references therein).