I have seen Milan annex France. The game crashed when I tried to save it, and before I screenshotted it. Milan had survived several wars with France, annexing Savoy and then some of southeastern France. I, as Spain, had taken southwest France. France DOW'd me when I had no troops in Europe. None! I built an army and succeeded in destroying France's. Meanwhile Milan had been beating down on France with the help of England. Engand took some northern coastal provinces. I took some Southern France provinces. Milan fights on for six years, then annexes France. It was beautiful. Of course, I annexed them in about 20 years, but that is another story.