[Leaning Right]

As soon as the FBI would make just one of the aides an offer for cooperation the attorney would have to withdraw and quit representing them all or it would be a blatant conflict of interest.

Right. Then everyone involved would have to hire new lawyers, and those new lawyers would have to be given time to get up to speed. This could well delay everything until after November's election. And that might be the plan all along.

[DaveA37]

I expect all will plead the 5th.