So what exactly are you not understanding? You can't get past your own definition of contribute? Did your teacher not 'contribute' to your education? That does not mean he did your homework does it?
All Capcom did was exactly what was said. You seem to believe it isn't enough to give them credit for their contributions. Itsuno did not have to type or click a thing. Only teach and guide. NT did all the physical work.
also, there's no way anyone at Capcom could have "shown something" or worked at all in the unreal engine on anything as it takes much time just to learn the software before you use it. That's one of the main reasons that NT did not use Capcoms' engine. According to Tameem.
Any orders given by Capcom were given to the head of development then he directed them to his team. Because of the language barrier, it's easier that way then bypassing him and walking around to type over the shoulders of individual workers.
If any details need to be trimmed or adjusted, a working demo was used in a meeting as a guide so the team's work was not interrupted. (over the shoulder assistance through a translator. Pfft! What are they, in kindergarten?)
Capcom taught, reviewed, and taught some more. Yes, it's tedious. That's why it took a year and change.
