Should I stay with the same franchise?

[controlz]

I recently purchased a brand new Ferrari from a Sytner dealer. I am now looking to buy a 992 Turbo S. Is it beneficial for my history (to hopefully be offered specials) if I buy the Porsche from another Sytner garage, even though it’s in a different location, or is the history only relevant for the same actual dealer? If so, a non Sytner would be more convenient me location wise.