General strategy for computing the three-point correlators used in this work. For small angular scales, we used the prescription for discrete data to compute the G_n and the Υ_i, n^×, while for larger scales, we used the grid-based approximation with varying resolution scales, Δ. For the off-diagonal elements, we first computed the G_n of each radial bin using the corresponding method and then mapped them to the grid of the larger resolution scale from which the Υ_i, n^× were obtained.