Interplanetary conditions and energy coupling associated with SSS 1 and SSS 2 during 10 May 2024 between 19:00 and 20:00 UT. From top to bottom, the panels are: (a) V_p, (b) N_p, (c) T_p, (d) β, (e) IMF B₀, B_x, B_y, and B_z, (f) VB_s, (g) the solar wind energy input rate/Akasofu ε-parameter; (h) the total JH rate (black), and the JH rates during 6-h long MLT sectors centered at 00:00 MLT (blue), 06:00 MLT (green), 12:00 MLT (red), and 18:00 MLT (cyan); (i) SYM-H, and (j) total SML (black), the sunlit ionospheric SML (SMLs, red), and the darkside SML (SMLd, blue). Vertical short-dashed red lines indicate the onset times of SSS 1 and SSS 2 expansion phases.