>>65318738"No" means "no".
"Please wait/postpone" means "probably no".
Not replying reads like you're not doing your job.
This is almost universal, and the sooner Japan gets on board, the sooner people will stop ranking them in the lower third for bureaucracy efficiency.
NijiEN management isn't Japanese btw, even if a project is stuck waiting on the Japanese side, they at least knew to keep everyone updated. But they didn't.