2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82145An expression for the spin-orbit interaction coupling between different levels, which was shown to be aberrant more than thirty years ago is used in a recent article [K. Amos, L. Canton, G.Piseni, J. P. Svenne and D. van der Knijff, Nucl. Phys. A 728, 65 (2003)]. It leads to expressions quite simpler than they should be. Its behavior is in fact of a character opposite to that of the spin-orbit interaction used in two-body studies.4 pages; version 2 pour correction PACSNuclear Theorytext