Well, that’s where having the same lawyer helps - the lawyer would know what went on in interview #1 & could assure #’a 2, 3, & 4 that everyone is sticking to the story, etc. ... or whatever. It will be harder for the FBI to turn the 4 against each other with the same attorney sitting in the room with each one.
This also shows the arrogance of the Clintonistas .... they’ve put a story/narrative together & I would bet money it’s not the truth, the whole truth & nothing but the truth so this means they are going to try to lie their way out of it. Mills can lie and stick to it - she’s got plenty of past experience & ice water in her veins. The rest of them ... not so sure.
Mills may have more exposure than the rest. She set up a company to exploit African opportunities. Remember Guccifer hacked Blumenthal’s email account and read the discussions with Hillary. The NSA is examining how Blumenthal came into possession of verbatim copies of classified information.
There’s quite a few loose strings out there. AFAIK Blumenthal could be looking at charges too. The Clinton crime family isn’t just a few shady characters. In this case the more the merrier doesn’t apply.