Direct Lake limitations

Hello 

I have jsut started reading about Fabric and DirectLake.

I was looking at the DirectLake limitations section here:

https://learn.microsoft.com/en-us/fabric/get-started/direct-lake-overview#known-issues-and-limitations

One of the items is:

• DateTime relationships aren't supported in Direct Lake models.

what does this mean ? does this mean you can't link my orderdate field in my Orders table to the Date field on my Date dimension table?

Please can anyone explain

thanks