Circularization time (e₁ < 0.01) for the HD 74156 system with I₀ = 40° (red) and I₀ = 50° (blue) using different values of the initial argument of the pericenter. For I₀ = 40° the timescale decreases around the Lidov-Kozai equilibria, because the system is the circulation regime. For I₀ = 50°, the system is in libration, but it is most likely destroyed after it crosses the separatrix.