There is an academic case to view उत्तर काण्डम् as a later development / addition to वाल्मीकि रामायणम् This can be perfectly consistent with उत्तर
There is an academic case to view उत्तर काण्डम् as a later development / addition to वाल्मीकि रामायणम् This can be perfectly consistent with उत्तर