An extension was last time announced 3 days before deadline....

An extension was last time announced 3 days before deadline.
This does not necessarily mean that this time round this procedure will have to be identical, but large companies tend to follow certain protocols and procedures ( I derive that from my own experience ) and it was a strong indicator from last time that extensions from 3M
appear to be not announced on expiry date for schedules.

The share price collapse is, in my opinion, a direct consequence of the last announcement. The details surrounding this ASX query have made me very suspicious about its intentions.
Provided that this was planned to break confidence and drive share price down for whatever reason, you know my preferred scenario by now, it was extremely successful.

Since I still don't see a leak of news from my perspective,
I still find an aggressive approach from 3M likely.
A leak would not have prepared itself with depressing the market depth for 8 days before it would act and drive share massively down. This drop today seems fear related.