Godzilla vs Biollante's best edited and most beautiful scen in the film, but it is a deleted scene. I'm not exactly sure why, but maybe it's because this scene was like 1 minute long.
And the same for the scene from godzilla vs spacegodzilla where they showed godzilla trying to get baby godzilla or little godzilla out of the crystal fortress and when baby godzilla was released from the fortress. I think that these scenes in godzilla vs biollante and definitely the ones in vs spacegodzilla should have been left in, while cutting the lesser effects of the films or some slower moments.
Also the audio that you are hearing from koichi kawakita was recorded around the time of 1992 when they were working on godzilla vs mothra. And this video came from godzilla vs biollante's special features on the dvd version of the film.
