Barr and Trump already had the authority to look at that classified material, but Barr did not have the authority to release it to a Grand Jury. Anything incriminating against the DS would be marked as "classified" to prevent it being revealed to a GJ. After Grand Jury, when sentences are given, next would be DECLAS to public.

So Barr and his people knew exactly what they wanted and needed to release to GJ. Trump had been in office for over two years by then. They had already retrieved and figured out what they needed (previous AGs ect). That step had already been finished. The work had been done. All that remained was releasing it to GJ. That's why it was time for the memo.

As Q mentioned in posts, the Deep States next desperate move was the release of scandemic and lockdowns. Lockdowns shut down Grand Juries. Lockdowns delay indictments. There were many angles to this such as push for mail in balloting (mass cheating -- win at all costs), but one big target was to halt Durham's investigation and the unsealing of indictments to Grand Juries.

Only recently, with the end of the lockdowns, have GJ started again and thus you see a trickle of indictments coming out of Durham. Don't let the Left fool you in thinking that Kevin Clinesmith was some "low level" lawyer. That is a fake news lie. He was the central lawyer in it. Sussmann and Dachenko are also important first steps.

The Left thought if they just got Biden in then Durham would disappear. It is not. The slow wheels of justice are continuing to their horror. Even they are as baffled as many conservatives to how this is happening. They can't figure out what is happening either. Why is Biden not shutting it down?

The problem is that they underestimated just how much the intel community was cleaned out during the 4 years Trump was in office. They don't realize just how much those groups were crippled and left ruined. Now most of their tools and powers are elsewhere (space force, NSA).