The spin density matrix element \rzz of non-prompt \Dstar mesons with respect to the helicity axis as a function of \pt in the rapidity interval $|y| 0.8$ in pp collisions at $\s=13.6 \TeV$, compared to that of non-prompt \Jpsi and \PsiTwoS mesons in the rapidity interval $|y|1.2$ measured by the CMS Collaboration in pp collisions at $\s=13 \TeV$ . All the data points are also compared to predictions from the PYTHIA 8 + EvtGen MC generators .