Combine two arrays in one array using vba

arr1 = Range(Range("C13"), Range("C13").End(xlDown)).Value2
arr2 = Range(Range("E13"), Range("E13").End(xlDown)).Value2
'arr2 = ws.Range("E13:E25").Value2
    
arr3 = Split(Join(Application.Transpose(arr1), ",") & "," & Join(Application.Transpose(arr2), ","), ",")
'Debug.Print Join(arr3, ",")