Would be nice as journalist to be insistent on inquiring the duration of the dive so far.
They write it's missing – but it is obvious where it is.
They write contact was lost, but it is unknown when.
This seems to be the whole point of such a news. Was contact lost 4 hours ago or 4 days ago? Contact lost 4h ago would probably be all fine, as they mention the dive tour takes around 8 hours. 4 days ago would mean they are all dead, as oxygen lasts that long according to the article.
And it left on Sunday around 6am to start the 96 hr timer. Best case they lost power, dropped their load, and floated to the surface and are just bobbing around somewhere in the ocean.