A couple of issues.
First, the government got a search warrant for Daniel Richman's devices in 2020. The search warrant was limited to a certain time period and the crimes under investigation were leaking and misuse of classified information.
What they took in the seizure exceeded the time period both before and after. Also, with Richman being a lawyer, they agreed that Richman had the right to review for privileged material before the government, so that happened, but on a kind of casual basis. Also, they permitted Columbia U, Richman's employer, to review for "academically privileged" material, also on a kind of casual basis.
At the time, however, Richman was one of Comey's retained lawyers and they didn't give Comey any opportunity to review and assert privilege.
They also seemed to have reviewed materials before and after the time limitations set forth in the warrant. When the government exceeds the scope of a warrant, they need another warrant to review that evidence and here they didn't get one, but seem to have reviewed it anyway.
Halligan appeared to make two material misstatements of the law to the grand jury, and also implied or stated that the government had better evidence that it wasn't sharing with the grand jury. That is redacted.
Also, it is known that the grand jury was originally provided with a three-count indictment and they no-billed one, true-billed the other two. That then, is a "no-billed" indictment.
Halligan would have then needed to re-present a second indictment with only the two true-billed counts and at least in theory run through the evidence again. Either that didn't happen and the foreperson was presented with a different indictment to just sign off on, or the government didn' t produce the transcript of the second indictment presentation, or both.
Just a shit show of stupidity. Trumpco is so bad at law.