In your explanation of why the minister wasn't in a conflict, you said in your first point that it was a file for the Minister of Transport and not a file belonging to the finance minister. However, it was in his bill. He introduced it.
The budget implementation act contained all kinds of things, but it also specifically contained the enabling legislation for Alto, the creation of the High-Speed Rail Network Act. Without that enabling legislation, Alto wouldn't proceed.
Does that change the calculation on who has ownership of it—when the transport minister could have put forward his own legislation, but the finance minister decided to do it under his auspices instead?