There is, however, some common practices, but not for the reasons described.
The literature part is improved by changing the headline, putting it in the right setting. The change illustrates how headlines can change the apperance of the text contents. However, I cannot see how chapter 2.2. is a sub-theme under the Ostrom Principles? If they are - the connection need explainnig. If they are not, the main headling Chapter 2 should be reformulated again.