Tor Browser with Tor VPN?

I’m testing out Tor VPN and honestly it seems great for a product still in beta.

My question is…

What is the best configuration to run Tor Browser while Tor VPN is active? Should I run Tor Browser on top of Tor VPN? Are there risks to that? Is there some technical reason this might cause a leak? Is it best to exclude Tor Browser from the VPN tunnel? This would be easy to do, I just have a hard time trusting that split tunneling is as secure overall. (I might be wrong about this.)

Please only answer if you have the technical knowledge to answer. Theorizing about the answer won’t be very helpful to me.