original_query: What was the relationship between Imler and Dr. Porsche within the corporate structure?
query: What was the relationship between Hans Nibel and Dr. Porsche within the corporate structure?
answer: Hans Nibel and Dr. Porsche were colleagues in the design and development department at Daimler-Benz.  Sources indicate they worked at the same level of authority, though Porsche carried ultimate responsibility for the department. There was sometimes friction between them.