Let D=(V,E) be a directed graph that is the union of two edge-disjoint directed spanning trees. Suppose that > There no subset X of vertices so that > there is precisely one directed edge > from X to its complement and one > directed edge from the complement of X > to X. Is it true that D has a directed spanning tree T, T is a subset of E, such that E-T is also a directed spanning tree and reversing the orientation of each edge of T results in a strongly connected digraph? ###update: The answer is NO as pointed out by an example by Maria Chudnovsky and Paul Seymour, who also pointed out additional necessary conditions. A remaining question is: **Problem:** Find a characterization of directed graphs $D$ that has a spanning tree $T$, such that $E-T$ is also a spanning tree and reversing the orientation of each edge of $T$ results in a strongly connected digraph