Performing HiFSA on the same dataset, using the Cosmic Truth (CT) software tool (NMR Solutions; ct.nmrsolutions.io) in automation, fully clarifies the assignments (Figure ; see also S5, Supplementary Material): (a) the first-order J-coupling forks confirm that the dd (H-6a=α) and ddd (H-2a=α) splitting patterns of the "outer halves'' are to be duplicated, due to the geminal couplings; and that (b) the actual resonance frequencies of the two nuclei are slightly different from the visual centers of the peak patterns; (c) HiFSA detects the presence of a long-range 4 J = W-coupling of 0.97 Hz between H-2a=α and H-4. Collectively, HiFSA confirms that (d) both resonances can be considered as having a general dddd multiplicity, keeping in mind the higher-order effects. Importantly, the full spin analysis shows that 32 lines underlie what appears to be 19 peaks with 2 additional shoulders. At 600 MHz, the 32 lines are composed of 32 quantum mechanical transitions, indicating that these two experimental patterns could be explained using first-order approximation. However, at 60 MHz, 464 transitions would be needed to explain the resonance arising from the same two spins. It should be kept in mind that numerous transitions within such large sets of transitions are often degenerate, which means they have the same or nearly the same frequency. To accelerate QM calculations, such degenerate or near-degenerate transitions can be compressed without compromising accuracy. For the purpose of concise nomenclature, however, it is still important to recognize that each visually identified peak typically comprises several lines, which are themselves typically composed of multiple transitions, even when using compression algorithms for (near) degenerate transitions.