The trust test
Every format should pass a simple trust test: can the reader see where the evidence came from? If your CV lists stakeholder management, reporting or problem-solving, the reader should be able to connect those claims to real roles, projects, courses or volunteering. If the evidence floats away from the employment history, the CV can start to feel thin.
That is why fully functional CVs are risky. They can group skills neatly, but they often make it harder to see dates, employers and context. A combination CV usually gives you the better balance: relevant proof is lifted higher, while the timeline remains visible.