Large-scale exchanges. On a large scale, dark-matter and baryons are coupled. During the accretion process and while the dark-matter smooth accretion (Ṁ_acc) feeds the dark-matter halo (M_h), the associated baryons (Ṁ_bar) feed a baryonic reservoir (M_bar). In the context of bimodal accretion, this baryonic reservoir is divided into two parts: the hot reservoir representing the hot atmosphere (Ṁ_sh and M_hot), and the cold reservoir representing filamentary streams (Ṁ_flt and M_cold). The cold gas feeds the galaxy (Ṁ_ff) directly. The hot gas follows radiative cooling process and then also feeds the galaxy (Ṁ_cool). As described in the text, a galaxy can eject material. The ejecta (Ṁ_wind) are continuously added to the hot-gas reservoir (M_hot) or definitively lost in the IGM according to their velocity distribution. Indeed, the gas stored in the IGM reservoir will never be considered.