Can one macOS laptop machine display and control another macOS machine but not remote desktop or something?

I have two macOS machines. One of them is a laptop. Right now I have them both hooked up to a KVM to share an external monitor and keyboard and mouse. I'm wondering if there is a way to use my laptop macOS machine to control the other one? So the monitor, keyboard, and mouse on my laptop one would connect to my other macOS. That way I don't need a KVM and can just use the monitor+keyboard+mouse on my laptop plus the external monitor hooked up to the laptop. And I do not mean remote desktop or VNC. I know how those work and that is not what I want. I am interested in more of a first party connection.