Hi GiL,
I can start a blocking event with a simple choice dialogue from one sprite in the scene.
And then, I'm using also another blocking event that starts from a HUD in the same scene. They seem to ignore themselves and can be started both. In my case, both represents dialogues and they overlay above each other.
I don't think this is intended.
If you're enjoying my products, updates and support, please consider supporting me on patreon.com!