If you don't change it, it will conflict with the application and there is no novelty.
There is no creativity if there is not much change.
If the change is large, it is out of range. . .
It's a tragedy. Why didn't you apply the same day?
PS: Analyzing what you said, A must have authorized it and B must have published it. Why not go to Sibo Intellectual Property Forum and post two patent application numbers for help? There are more cattle people in it, and we may be able to analyze a better method. .