Let $P\subset\Bbb R^d$ be a vertex-transitive polytope aka. an orbit polytope.

Can there be a matrix $T\in\mathrm{SO}(\Bbb R^d)$ that commutes with all symmetries in $\mathrm{Aut}(P)\subset\mathrm O(\Bbb R^d)$?

Probably one approach to the question is as follows: can there be such a polytope $P\subset\Bbb R^d$ for which $\mathrm{Aut}(P)$ is (real) irreducible, but not absolutely irreducible (that is, not irreducible over $\Bbb C$).