Determine If Two Range Variables Are Same

How to decide the two range object variant represent the same range? Plz check the following code, How to decide Rng4 and Rng5 is or not the same range?

Sub IsTheSameRange()
With ActiveSheet
LastRow = .Cells(65536, "B").End(xlUp).Row
Set Rng1 = .Range(.Cells(3, "K"), .Cells(LastRow, "K"))
Set Rng2 = .Range(.Cells(3, "AE"), .Cells(LastRow, "AE"))
Set Rng3 = .Range(.Cells(3, "BQ"), .Cells(LastRow, "BQ"))
Set Rng = Application.Union(Rng1, Rng2, Rng3)
Set Rng4 = Rng.SpecialCells(xlCellTypeFormulas, 23)
Set WhlRng = .Range("A3:DR" & LastRow)
Set Rng5 = WhlRng.SpecialCells(xlCellTypeFormulas, 23)
End With
End Sub