Correlation analysis between parameters measured during the shock SC phase and those associated with the main peak of the light curve for the literature sample. Significant correlations are highlighted, including relationships within the SC phase, such as between the transitional absolute magnitude (M_trans) and the SC rise time (t_rise), and between the SC peak absolute magnitude (M_peak, SC) and M_trans. Correlations within the main peak include M_peak and t_rise. Additionally, correlations between the SC phase and the main peak are shown, including t_trans with t_rise, M_peak, SC with t_rise, and M_peak, SC with M_peak. These relationships provide evidence linking the SC phase to the main peak properties, highlighting the continuity of physical processes across both phases. Non-significant correlations are also shown for completeness.