The FBI is really starting to stink. Trunk called it right by firing Comey.
Special Agents of the FBI were those tasked with coordinating the protection of AG Lynch. USSS was tasked with taking care of Bill
If there was a single hint of a coordinated meeting between Bill and Loretta, the two details would have a record of coordinated communications.
These are the communications that discussed events both before and after. There very likely would have been a flurry of email about the "No Cameras, No Photos policy.
My opinion is that a lot more truth is buried about this meeting and it is in agency files