Ratio between the angular momenta of the outer binary and that of the inner binary is compared to the ratio between the initial and final GW timescale of the inner binary for simulation SET4. The colour coding marks the ratio between the final and the initial pericentre for the inner binary. Left (right) panel: refers to prograde(retrograde) models. The GW timescale may change significantly for a broad range of angular momentum ratios, but the distribution is more skewed to lower GW timescales for retrograde orbits.