Detectability matrix for the HARPS and ESPRESSO dataset within the habitable zone of HD 22496 performed through injection-recovery. The color-coding represents the significance in the posterior of the RV semi-amplitude parameter in units of its standard deviation, with ratios above 3 (signal detected) in blue. The dashed lines correspond to one and three times the standard deviation of the residuals from the one-planet circular model (i.e., 28 cm s⁻¹).