Representative spectra of lenticular host (i.e. NGC 809) at redshifts 0.76 (left), 1.50 (centre), and 2.30 (right) obtained by adding the signal from the spaxels within the effective radius (see Table 4). Top panels: spectra extracted from the HSIM_Inputs, only for the host galaxy scaled to 10¹¹ L_v, ⊙. Bottom panels: spectra from the mock HARMONI observation, after reduction and flux calibration, for the three host luminosities. The blue dotted lines correspond to the PPXF best-fit model for each spectrum.