Temporal evolution of the temperature at the bottom of the convective envelope and surface lithium abundance (divided by the initial one, left panel) and surface A(Li) as a function of T_eff (right panel) for the same hot ECE and EWS models shown in Fig. 9. The evolution of the reference cold accretion model (LLC, black line) is only shown during the accretion phase. The crosses mark the end of the accretion phase.