How does primal handle the chat?

We've noticed that many people do not display in chat (chat or zaps) depending on which app they're viewing from (including Primal). I was able to fix this issue for my own stream by using the noStrudel chat instead of the ZS chat. Reason - on noStrudel I could change the socialgraph/wot settings to ensure NOBODY is being filtered from chat because they exist outside of the SocialGraph.