Coupling between the inclination i₂ and the ascending node longitude Ω₂ of a given Type-F particle, which result from the No-GR (red curve) and GR (blue curve) simulations. The initial orbital elements of this particle are a₂ = 20.72 au, e₂ = 0.62, i₂ = 144.84°, ω₂ = 42.15° and Ω₂ = 222.30°. The inner planet of such a system has a semimajor axis a₁ = 0.95 au and an eccentricity e₁ = 0.74. The red and blue horizontal lines represent the inclination values for which the ascending node longitude reaches extreme values for No-GR and GR simulations, respectively.