Not to my observation and knowledge.
What would even be the purpose of page 2? You can have devlogs as subpages of your project, but those are not really things people will read regularly when reading your project description. Why would they visit a page 2? If you want to do an html game, that will happen inside the game area.
Attached projects, subprojects or as some would call it: DLC, would be a handy feature. The current methods to offer such are lacking. On page it is hard to understand and tricky. Best workaround is a new project and to offer that as a bundle with the main project. And I might misremember, but there might be conditional projects mentioned somewhere, but I have never seen such, or I mistake this feature for another one or from another site.