Your second question can you be more specific?
ASX doc screenshots and link below is considered a reliable doc to answer the first question.
Notably for Team AVZ, the fourth bullet point just below is the holy grail of (purported) righteousness that you may recall in the weeks before suspension.

However, the following is what AVZ may not want you to understand because there are a number of events in 2021 into 2022 that protects against the fourth bullet point above occurring subjectively.

An ASX company officer needs to predict how an investor will react to particular information when it is disclosed.
Information asymmetry between you and the company, requires checks and above outlines that.
ASX advises the following, 1. & 2. is helpful to decide. I definitely would want to know despite AVZ’s aggressive letters warning not to, Cominiere and Jincheng went ahead and registered on the RCCM file.
The media speculation page on May 4 2022, had powerful reactions on the share price suggests it was the right call to disclose, but the market really wasn’t convinced about relying on bullet point 4. as the criteria to decide @ 1. Below.

source :
https://www.asx.com.au/content/dam/asx/about/compliance/abridged-cd-guide.pdf