Research emerging from scientific studies, including work by Zhou et al. (2024) hosted on the ESS Open Archive, indicates that giant impacts on terrestrial planets lead to significant, yet primarily short-term, heating of their cores. While these impacts can substantially increase core temperatures, this superheating creates a strong thermal stratification within the core. Consequently, heat is rapidly transferred upwards into the overlying mantle rather than being conducted into the deeper core. For instance, a canonical Moon-forming collision could raise core-mantle boundary temperatures significantly but the core could cool to an adiabatic state within approximately 290 million years. This period, while substantial, is considered 'short-term' within the billions-of-years timescale of a planet's overall evolution. The rapid heat transfer and subsequent cooling have profound implications for the planet's long-term evolution, specifically by influencing the onset of the geodynamo – the mechanism that generates a planet's magnetic field. A delayed geodynamo can have significant consequences for a planet's habitability by affecting its protection from cosmic radiation and atmospheric retention. The study employs Smoothed Particle Hydrodynamics (SPH) simulations to model these complex impact scenarios and their thermal consequences for planetary interiors. This research challenges some previous assumptions about the sustained heating effects of giant impacts, emphasizing the dynamic and relatively swift thermal response of the core. The ESS Open Archive is a preprint server, meaning the research is publicly available but has not undergone full peer review.