SB radial profile centered on the peak of the Lyα emission found to the southwest of the quasar, corresponding to a LAE in region R1 (see Fig. 6). The blue circles represent the radial profile extracted from the KCWI data. The green squares correspond to the HST F140W profile, which has been rescaled to match the Lyα profile to aid visual comparisons and highlight the stellar component associated with the source. The red triangles show the mean SB profile of LAEs from the MXDF MUSE field (Guo et al. 2024), providing a comparison between the emission profile of region R1 and a typical LAE environment. This comparison emphasizes the enhanced SB of the Lyα halo in region R1 relative to the average LAE population, potentially suggesting additional contributions from the CGM or interactions with the quasar’s environment.