Sensitivity limits for HD 20794 in mass. HD 20794 b,c, and d are above our sensitivity limits. The dataset, thanks to the YARARA correction of HARPS and the extreme precision of the ESPRESSO dataset, shows a sensitivity limit in mass under 10 M⊕, with the possibility to detect Earth-like planets for up to ~20 d. We have a sensitivity down to 2.5 M⊕ for the inner edge of the conservative HZ and down to 4.1 M⊕ for the outer edge of the HZ. We highlight in green the conservative HZ and in yellow the optimistic HZ.