Cross-correlation matrix between COSEBIs (E_n), band powers (𝒞_E,l) and 2PCFs (ξ_±) from SALMO mocks. The top triangle shows the cross-correlation values corresponding to the colour-bar. The bottom triangle highlights the entries with more than 20% (red) or less than −20% (blue) correlation. We show results for tomographic bin combinations of the lowest and highest redshift bins only, resulting in three blocks per statistic containing the bin combinations 1–1, 1–5, and 5–5.