Time between the formation of the first and last member star of a cluster (t_{100 − 0}) as the function of the time of the first massive star in the cluster (t_fms). The black dashed curves present the line of t_{100 − 0} = t_fms + {0 Myr, 1 Myr, τ_⋆(100 M_⊙),τ_⋆(20 M_⊙)}, where τ_⋆(100 M_⊙) and τ_⋆(20 M_⊙) are the lifetimes for 100 M_⊙ and 20 M_⊙ massive stars. The time between t₁₀₀ and t_fms are smaller than 1 Myr for most clusters in the full feedback simulations, much shorter than the time required for the first SN explosion.