H_E-band number counts for samples built from the Flagship2 catalogue. The samples selected with the neural network classifier, using Euclid photometry only or combined with ground-based photometry are shown, respectively, by the blue solid and magenta dashed histograms. As indicated by the legend, the red dotted histogram corresponds to a sample selected in redshift only, using Euclid photometric redshifts. The counts for the full Flagship2 catalogue and the true target sample are also shown for reference, by the orange and green histograms. The distribution of the true targets (green histogram) dies off at magnitudes fainter than H_E ≃ 22.5. The targets in the EL-COSMOS catalogue extend to fainter flux.