Parts of the reduced coadded 2D MMIRS spectra for the eight spectroscopically confirmed cluster members in CARLA J0950+2743 at z = 2.363 ± 0.005 (top) and for five spectroscopically confirmed cluster members in CARLA-Ser J0950+2743 at z = 2.243 ± 0.008 (bottom). The cyan arrows indicate the positions of redshifted Hα+[NII], Hβ, [O III], and [OII] emission lines. The extracted 1D spectra are shown in Figure A.1.