Rolling DateDiff to compare dates within a Table

this code below almost works - the issue is it gives 3 for both rows dated 2009-06-04
in order to solve this you would need to either
1) add row id as a column and use that as criteria instead of date
2) have time of the order as well as the date, so you could specify that orders did not happen in the same moment

Column =
VAR CurrentCustomerID = 'Table'[CustomerID]
VAR CurrentOrderID = 'Table'[OrderID]
VAR CurrentDate = 'Table'[OrderDate]
VAR PreviousDate =
    CALCULATE (
        LASTDATE ( 'Table'[OrderDate] ),
        FILTER (
            ALL ( 'Table' ),
            'Table'[CustomerID] = CurrentCustomerID
                && 'Table'[OrderID] = CurrentOrderID
                && 'Table'[OrderDate] < CurrentDate
        )
    )
RETURN
    IF ( PreviousDate = 0, 0, CurrentDate - PreviousDate )