Scenario I: Snapshot of model M4 (S4M7) evolved from −2 Gyr until the current position of Leo T, where we show slit cuts along the Declination axis through the dwarf’s centre for the gas density (left panel), pressure (middle) and temperature (right). The orbit corresponds to a first infall solution, reaching 300 km s⁻¹ tangential GSR velocity. The dwarf centre is located at 1.1 kpc, and the IGM wind is injected from the left side of the panels, following a beta density profile that depends on the distance between Leo T and the Milky Way. We note that a gas density of ${\rho }_{\mathrm{gas}}={10}^7{\mathrm{M}}_{\odot }{\mathrm{kpc}}^{-3}$ here corresponds to n_HI = 0.4 cm⁻³.