Comparison between the line profiles of the main transitions in our study (shaded histograms) and the [C II] line profile (black histograms). The grey shading masks regions that are not covered within our observations or are contaminated by other emission lines. To first order, all the lines appear to have a consistent bulk velocity and width. A tentative H₂O absorption is detected at −750 km s⁻¹ in the 3(3,1)–3(2,2) and 3(0,3)–2(1,2) transitions, suggesting the presence of an outflow.