@Sirup:
I would suppose that Walter meant that the 6D can shoot in 4K, it can shoot raw and it can shoot at 24/40fps, just not all at the same time.
If you use the intervallometer, you can perfectly well shoot a timelapse video in 4K/raw, just not 24/30fps real time. You can also perfectly well shoot in 24/30fps and in raw, just not 4K.
Only when you want to do everything at the same time, i.e. shoot 4K/raw at 24/30fps, you get into problems because the 6D's hardware simply can't do that.