PLCs' relationship with PBL and Authentic Assessment

We've had a significant amount of discussion on problem-based learning in several classes.  This class also brought professional learning communities and authentic assessment into the mix.  On the surface it can be seen how these three interact but I took a little time to review their definitions and see how they really relate to one another.  This can be seen in my Venn diagram which was a suggested activity for class.

I have found the information about professional learning communities to be intriguing because I feel the training department I used to work with was its own little PLC.  All contact center and claims trainers and QA reported to the same manager and there was lots of collaboration between departments on sharing not only information but also processes that have worked in training classes.  We also had best practices set forth to use in all training classes, like advising of objectives up front and on the back end ~ tell them what you'll teach, teach it to them, tell them what was taught.  While this is supposed to be an adult learning technique it seemed to annoy more learners than not, but that's another topic and post...  The various learning departments within the company - agency, corporate, and customer service operations (the dept referred to above) meet quarterly for a learning forum where collaboration and sharing occurs among areas of the organization.  This sharing of information and knowledge not only helps trainers learn skills and tips from other trainers but also provides more background to support PBL and assessments in training classes.  Working in claims, we can advise how certain things are done in relation to our daily position but understanding the other areas of the company as well, specifically agency and underwriting, can aid in helping to develop new employees develop conclusions for handling claims.