How was William Dieterle connected to Max Reinhardt's A Midsummer Night's Dream?

William Dieterle was connected to the 1935 film adaptation of A Midsummer Night’s Dream as a co-director alongside his former mentor, Max Reinhardt.1

Dieterle had previously been a member of Reinhardt’s stage company in his early career. When Warner Brothers produced the 1935 film—which was based on Reinhardt’s successful 1934 stage production at the Hollywood Bowl—Dieterle was brought in to co-direct after Reinhardt had already begun filming. Although the resulting movie was considered an imperfect adaptation, it was a prestigious project for the studio and received an Academy Award nomination for best picture.231