However , contemporary sources are contradictory as to whether it was ever finished or not .
If it was indeed operational , this canal would have been the first to link the Rhine basin to the Danube basin , across the European Watershed .
Contemporary sources are contradictory as to whether it was ever finished or not .
If it was indeed operational , this canal would have been the first to link the Rhine basin to the Danube basin , across the European Watershed .