Top panel: the Δm₁₅(B)–M_B diagram (Phillips relation) for SN 2024aedt and the M. Hicken et al. (2009) comparison sample (excluding objects at z  < 0.01). SN 2024aedt is indicated by the red star; see Section 3.2 for details. The blue line represents the Phillips relation (M. M. Phillips et al. 1999). The “91bg-like” region from S. Taubenberger (2017) is shown in red. (It should be noted that this region is not strictly “91bg-like” but also includes part of the parameter space for transitional SNe.) Details of the transitional sample can be found in Section 3.5. Bottom panel: histogram of the s_BV distribution for SN 2024aedt and the S. A. Uddin et al. (2024) sample. SN 2024aedt is indicated by a red dashed line, and SN 1986G–like objects from the S. A. Uddin et al. (2024) sample are marked by black dotted lines.