The spatial and kinematic separations between the gaseous dwarf galaxies and their hosts. Left: projected distance (d_proj) and line-of-sight velocity separation (ΔV_los) are in physical units (Table A1); different symbols distinguish the H I data sources (Section 2). Right: the same quantities scaled by the host R₂₀₀ and V_esc (Section 3.1). Blue curves show the point-mass escape velocity, with dashed lines denoting our satellite-unbound classification (Equation (5); taking R_V, R_d = 1) and shaded regions showing the expected range under projection effects. Filled symbols in both panels highlight the “close” satellite candidates within the host projected R₂₀₀.