(a) Comparison of Bondi and Hill radii under different impactor masses and orbital inclinations, for a central black hole mass M_BH = 1.05 × 10⁶ M_⊙ and a semimajor axis a = 1.62 au ( ≈ 160 R_g). Effective radii i = π/10 and i = π/2 are shown for reference; (b) Face-on view of the ∣Δv∣ distribution from the bh_i18_sigma1e6 simulation at the moment when the black hole passes through the disk midplane. The white dotted circle denotes the Hill radius, and the black dashed circle shows the Bondi radius for reference.