Hmmmm, this is arguable.
MSDN says that it can only use columns for the same table.
And a computed column can't reference a column outside another table, it can reference a UDF which on his part references columns from other table.
So the question is a bit ambigous, as it is not clear if direct or indirect reference is meant.
Need an answer? No, you need a question
My blog at https://sqlkover.com.
MCSE Business Intelligence - Microsoft Data Platform MVP