Org-journal vs org-roam-dailies

For me the most important feature of org-journal is the second one you mentioned.
And I still use org-roam-dailies for its file can be included in org-roam database and shown in org-roam buffer.

So, I put my journal files into a directory in my org-roam-directory to get both mode’s advantage.

A compatibility problem exists though, and I managed to solve it.