The Zettelkasten method and The Archive allow you to link to other ideas/notes. It takes a bit more effort than I’ve given it, but it looks promising. They have a pretty active forum with a lot of good ideas for using it. The method can also be used in other apps such as nvAlt, Sublime Text, and Notion (I believe).

https://zettelkasten.de/the-archive/

https://forum.zettelkasten.de/discussions