What is a potential conflict between purchasing and Engineering$/$R&D$?$

Engineering specifications may limit the supplier pool to one supplier, limiting purchasing$$s ability to negotiate the best deal.

There are no conflicts; personnel in these functions rarely interact, except socially.

Purchasing replaces the Engineering$/$R&D department with a supplier of its own choosing.

Purchasing encourages suppliers to participate in the new product development process, angering R&D scientists.