It basically checks the node against the Main Scene set in the Project Settings.
I’d recommend against using singleton in this case, unless you really have to or know what you’re doing. What I would do instead is create a bigger scene containing this scene sequence manager. So you would never need to deal with something like this in the future.
Thanks. It is a perfect solution at this point.
You are right about the second recommendation. I will build a Scene container scene later.
Thank you.