Pretty sure it's gone forever. Checked a few different sources and some other departments data retention policies are published - they all say deleted between 15 and 30 days after posting with no reference to them being kept longer. You'd think if they were archived they'd want us to know...
Exactly. If the covid enquiry achieves anything it will be that these conversations go back to happening in a non dredgeable way.
I'm a civil servant - all the juicy chat happens on Teams - which deletes after 5 days.