When it comes to the dogs, I can often see it coming…if not always. “Nope, can’t teach this new skill right now, because it will break something that I need in the immediate future.”
When I was teaching agility and rally, I saw broken dog brains all the time. Dogs learning how to back up would forget how to sit. Dogs learning to stand from sit would forget how to finish to heel. Dogs learning to stand from down would forget something else altogether.