Top: redshift distributions n_i(z) of the five tomographic source samples (solid lines). The shaded bands indicate the selection window on the photometric redshift point estimate z_B. Bottom: line-of-sight window function, W(z), to project the three-dimensional power spectra P(k) (in comoving units) into their angular counterparts, C_ℓ. The lensing window functions (solid lines, Eq. (5)) are normalised by the maximum of the window function of the last tomographic bin, while the Compton-y window function (dashed line, Eq. (6)) is normalised by its maximum value.