Example of temporal evolution of the eccentricities of the planet and the brown dwarf (top) and their mutual inclination (bottom). The initial conditions are set using the best-fitting parameters (see Table B.1), and i_Ab = 128.25° (M_Ab ≈ 2.13 M_J), and ΔΩ = 18°. This corresponds to an initial mutual inclination of about 40.47°. The minimum value of the planet eccentricity is about 0.06 and is reached when the mutual inclination reaches about 72°.