Currently, the space Homepage or Overview page can't show normally in Smart Link page. The below error appears:

We can't display this link as an embed, just as a card.
More about Smart Links in the content tree

We request one enhancement to let Smart link can support this kind of pages.

The expected result is as below
Step 1: Copy the link of one space homepage or Overview page
Step 2: Create one Smart Link page by clicking + on the page tree or Create on the top navigation bar
Step 3: In the pop-out, paste the link saved in step 1

The Homepage or Overview page should display normally just as other pages