Questions that should have been asked at the Signal hearings
but weren't. Each of them should have been asked "Have you participated in any other Signal sessions of any kind?" "During your chat sessions or face to face meetings have you at any time included people other than government employees in those sessions or meeting?" "Did you maintain or delete or instruct others to maintain or delete records of those sessions or meetings?" "Who from outside of government employment have you been with in sessions or meetings?".
Instead it was just treated like just an investigation of this particular incident. You can be sure that same grouping will not ever be available for those questions a 2nd time. It was important to get them on the record with statements. If they tried the "I don't recall" nonsense then if later on proof of such a session or meeting being held was in close proximity in time to the "I don't recall" statement you can use that to push the fact of their lying.
But getting bogged down into the details of whether something was classified etc. only served to let the perpetraitors (no I didn't misspell that) get into a whirl of semantics and obfuscation.
Holding meetings/sessions and destroying records is an area to go hard into because you can't run away from the clear move that you are trying to hide things. Although Pam "Donation Check" Bondi isn't going to have DOJ do anything the value can be had in telling the story of deception and corruption. Also the "outside of government" people in those sessions/meetings could get exposed especially if some underlings in the government offices would care to give names and they could do so anonymously to reporters. Nudge, nudge.