The FoM_TOT for different subsets of correlations that form the nn signal. Throughout, we used N_zbin = 10 and σ_ph = 0.05. The marginalisation has been performed for N_K = N_Z = 7 nuisance parameters (black dashed bars) or N_K = N_Z = 3 nuisance parameters (grey solid bars). The two leftmost columns show the full set of ϵϵ and nn correlations for reference. The two centre columns stand for gg and mm correlations only, employing the cuts in angular frequency. The rightmost columns show again gg and mm, but here the full information up to ℓ_max = 3000 is considered. Note that mm correlations depend neither on intrinsic alignments nor on galaxy bias and hence are independent of N_K and N_Z.