Does anyone know whether

- I will get any free hold luggage on these Air Nostrum / IB flights thanks to my BA status? Ideally I need two pieces as I will be flying TLS-MAD and then onwards with QR.

- whether the IB agent at TLS will be able to interline my luggage onto QR?

The QR ticket is in J but I am unwilling to pay almost a 1000 Euros for the 1 hour TLS-MAD flight in that tiny plane just to benefit from a business class baggage allowance when I can fly in Y for 300

Thanks for your help and advice!