Example 2: We refer to a pair of Kubo components with similar correlation times (τ 1 ≈ τ 2 ), but different amplitudes (Δ 1 2 ≠ Δ 2 2 ) as degenerate. In this case, Δ 1 2 and Δ 2 2 become indistinguishable due to their linear dependence in the FFCF, corresponding to