Hα-[NII] complex doublet in the 2024 merged normalized FORS2 spectrum. The global four-component fit is displayed in green, rescaled by 0.04 for visibility. The individual Gaussian components are also shown: in magenta the broad and narrow Hα components, and in dark blue (dashed lines) the [NII] components. While the three narrow components are at the systemic redshift z = 0.2621, the broad and narrow Hα, both in magenta, clearly have different centroids.