Let A and B be two positive definite, real, symmetric matrices. Their eigenvalues are constraint to be $\lambda(A), \lambda(B)$ respectively. I know (from 1) that the eigenvalues of AB must obey $$ \lambda^\downarrow(A) \cdot \lambda^\uparrow(B) \prec \lambda(AB) \prec \lambda^\downarrow(A) \cdot \lambda^\downarrow(B) $$ where $x \cdot y := (x_1y_1,\ldots ,x_ny_n)$ for $x,y \in \mathbb{R}^n$ and $\prec$ is the majorization preorder.
My question is, for a given set of eigenvalues $\lambda(A),\, \lambda(B)$ and $\lambda(AB)$ which satisfies the above, does there necessarily exist an A and B such that they and AB have the desired eigenvalues?
I've found plenty of material on similar inequalities, but nothing that states if every solution of the inequalities can be realised.