The question itself seems ridiculous, doesn’t it? Of course, the answer has to be “no.” Except … not really.
There was a time when a criminal attorney would call the prosecutor, or even the investigating agent, and say: “I represent X. All future contacts should/must be through me.” That would be the end of it. No prosecutor would dare authorize the investigating agent, or an informant operating under the agent’s instruction, to speak to X behind the lawyer’s back. Nor, certainly, would the prosecutor contact X directly. Those were the rules of the road; pretty much everyone in the justice system knew them, and adhered to them.
