Final separation of a WD−BD binary as a function of the initial mass of the primary star and the initial orbital separation, with a BD mass of 0.050 M_⊙, under the assumption that α = 0.3, 0.5, 1, and with an eccentricity of 0. The green area indicates the binaries that have never undergone a CE phase and will become wide binaries. The dark blue area marks the binaries that will merge during and after the CE phase, and the light blue and pink area denotes the binaries capable of forming close WD−BD binaries following a CE phase. The final WD−BD orbital separation, expressed in units of solar radii (R_⊙), is illustrated using the color bar.