We thank all of the reviewers for their time, careful reading, and valuable feedback

We thank all of the reviewers for their time, careful reading, and valuable feedback. Indeed, we verify that the assumption holds for the datasets used in the experiments (see Section 1.3 of the The distinction between norms is another good point. " means computing null E null In Figure 2, the quantities from Eq. (11) are hypothesized We understand that spectral methods are not used in some engineering settings.