That is the basic purpose of the OE. As I said in response to one of the previous questions, you take the training material that is intended to bridge the gap between one and the other, and whatever those differences may be—be they how cockpit indications are displayed, the handling characteristics or whatever may be different between the two aircraft—that is the purpose of the delta training to make sure it bridges that gap. The conclusion of the OE is that this training was sufficient; therefore, the conclusion is it's operationally suitable. That's it.
On February 25th, 2020. See this statement in context.