New Niche -> Second Channel?

Hi all! Basically just my title. I do video game content on my channel, primarily let’splay but I’m currently working on guides and essays.

But I’m also a professional philosopher and want to record and upload some Philosophy 101 content that has no direct connection to video games. Should I keep this on my main channel, or make a second?

As a less extreme niche switch, I am also interested in making tabletop gaming content. Could that stay on my existing channel, or would that warrant a new channel?

Thanks in advance!