Can I use Spamsieve AND Apple Mail Junk Filter at the same time?

I’ve searched the forum for this, as I’m sure it’s been asked before - sorry for not finding it. Simple question: Can I use Spamsieve AND Apple Mail Junk Filter at the same time? Put another way, is there any downside to using both, in kind of a “belt and suspenders” mentality? Thanks…

Technically, you can, but I recommend not doing that because it can make it difficult to know when you need to correct a SpamSieve mistake, which would lead to incorrect training data and poor filtering accuracy.