Checked on DCN's last two trading halts (26/5/2021 and 2/12/2021) and both were for CR: the announcement of the CR was within half an hour. So you may be right that this time around it could be something else. I could be wrong, but a longer delay implies more preparation time for bad news. Perhaps I have now being programmed to expect bad news!!
BTW going through other companies trading halts histories, it is the norm to have a lapse of two working days before announcement of CRs.
DCN Price at posting:
17.0¢ Sentiment: Buy Disclosure: Held