Complex sentence: He was appointed Professor at the Hochschule für Musik und Theater Hamburg in 2000, and since 2006, he has been chief conductor of the Münchner Rundfunkorchester (Munich Radio Orchestra).
Split into simpler sentences: He was appointed Professor at the Hochschule für Musik und Theater Hamburg in 2000. Since 2006, Schirmer has been chief conductor of the Münchner Rundfunkorchester (Munich Radio Orchestra).