Predicted diffuse neutrino flux (solid lines) with 1σ uncertainties (shaded) from the SBO-like LL GRB population compared to observed astrophysical neutrino fluxes (crosses​​​​​; R. Abbasi et al. 2024, 2025; O. Adriani et al. 2025a). Scenarios assume a population composed of either GRB 060218-like (blue) or GRB 100316D-like (pink) sources. The prompt (dashed) and afterglow (dotted–dashed) subcomponents are shown separately, highlighting the distinct contributions to the two-hump spectral distribution.