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Question: Yamaha HTR-6240 and RXV 365

I just purchased a Refurbished a Yamaha HTR-6240BL.
Some are listed with and without the "BL" on the model. Is there any difference?

My second question is that it is the exact same Model as the Yamaha RXV-365. If that is true, why do they o that?
Thanks for your help. ptfitzy