I've read your other post as well, and I would say that your itinerary is relatively low-risk. Your connection at CDG has more than an hour's leeway, and four hours at BER is plenty.

However, despite it being a low-risk connection I would still recommend that you take out travel insurance, and that you look for a policy which includes missed connections, so that you are covered in case something goes wrong and you miss your connection at CDG. I can remember three occasions (over a period of about ten years) when I was on long-haul flights that were delayed by a couple of hours or more; it's rare, but it can happen.