Complex sentence: There is also the provision of awarding the "Großkreuz" in a special rare design, which has so far only been used twice: for Konrad Adenauer and for Helmut Kohl.
Split into simpler sentences: There is also the provision of awarding the "Großkreuz" in a special design. Otherwise this provision has so far only been used twice, once for Konrad Adenauer and on Helmut Kohl.