“Generally speaking, the FBI does not.”
I imagine the FBI conducts honest investigations most of the time, but from these conversations I’ve concluded that getting a lawyer before talking to them is a good idea.
Do you think that if you started discussing a subject with the FBI, they could require that you continue answering questions on the subject just because the discussion was started? Maybe not because there’s the fifth amendment.
You always have the right to have your lawyer present and you always have the right to stop answering questions. Be aware that LEO will try to paint this as not being cooperative. That is why it is important to have your lawyer present to control the conversation.
If you agree to an interview, but only if it is video recorded, and then the FBI decides to NOT participate, they are the ones seen as being not cooperative.