Given two parametrised "well-behaved" real skew-symmetric matrix-valued functions (of real variable(s)) $K(x)$ and $L(x)$, is it true that there exists another matrix-valued function $M(x)$ s.t. $e^M=e^K*e^L$ for all real $x$?
A sufficient condition, based on my analysis of the BCH-D integral formula, would be that "$[\ln A, B]$", brackets indicating commutators, $A$ being orthogonal (real) with determinant 1, and $B$ being real skew-symmetric, does not depend on the branch of the logarithm as long as said branch is strictly real.
EDIT: Gave my dead answer back to life by breathing rigour in (vide infra).