Host galaxy absorption and emission lines in the X-shooter spectrum of SN 2020xga (panel a) −8.3 days and SN 2022xgc (panel b) +21.9 days after maximum light. The vertical lines illustrate the various redshift values of the galaxy lines. Panel a: In the spectrum of SN 2020xga,, the emission lines (dashed red lines) give a consistent redshift of z = 0.4287, whereas the strong (dashed blue line) and weak (dashed gold line) absorption lines indicate redshifts of z = 0.4283 and z = 0.4296, respectively. Panel b: The host galaxy lines (dashed gold line) of SN 2022xgc agree on a redshift of z = 0.3103.