Observed profiles of Paα and H₂ 2.12 μm, showing fast outflows. The spectra are extracted from the region in Fig. 1 marked with a cyan diamond, and they are reported in velocity space. The best-fit emission line profiles are shown in orange, and the individual Gaussian profiles used to reproduce the line shapes are reported in blue, purple, and green. The vertical grey lines mark the zero-velocity of the E nucleus, which is the most likely origin of the outflow shown in the figure (see the detailed discussion in Perna et al. 2020; Ulivi et al. 2024), and the dashed red vertical lines in the top panel identify the He I lines close to Paα (see Table C.1).