No. Not normal at all. Should be 3-5 a game. Is this happening often or just once? If just once, it’s one of those anomaly type game. 15 sack game happen in real life too, but it’s rare. Was it two rookie or unseasoned qbs?
May be back to where you have to delete your profile after each game watched in CFM. Earlier in release we had to do the same thing. Also, be sure you’re deleting the playcall suggestions. Personally i redownload the suggestions and delete every time i turn on the console.