Spectral sequence of SN 2022xxf during the second LC hump. Spectra are normalized by their average values and not corrected for reddening. Phases are in the observer frame, relative to the first LC maximum. Prominent emission lines are indicated by vertical lines corresponding to the rest wavelengths. The dashed vertical line indicates 7325 Å, the average wavelength of the [O II] λλ7320,7330 doublet (see Sect. 3.3.2), and the dotted horizontal line the approximate epoch of the second LC peak. Vertical gray shades indicate spectral regions affected by telluric absorption.