@Edent I assume you don't mean like the shared Visual Studio Code thing? (And that you know about that?)
@owenblacker I do not know about that and it may be what i mean 😄
I thought I’d remembered something like that in VS Code, and sure enough, here it is!
https://learn.microsoft.com/en-us/visualstudio/liveshare/use/coedit-follow-focus-visual-studio-code