Are dealer systems interconnected?


If i go to dealership1 and performed check up, and they told me i need to fix item A, B, C.
Now i go to dealership2 and perform check up, will they be able to know i went to dealership1 and they already told me to replace item, A, B, C?
On the other hand - if i decided to fix item B, from dealership2 becuase of cheaper price ---- will dealership1 be able to know that i fixed itemB from daelership2 if i visit them in future again?
Thanks.




