Not all retired fbi guys are insiders. Their are the headquarters a holes and their syncophant office heads who are aligned with their protégés in each field office verses the true field agents. Cases are rarely run out of headquarters except the trump political witch hunt. Recall the first thing that happened when hitlery e mail found on weiners cell? The field was forced to send it to HQ.
The NYCPD had the Weiner laptop first, stated that they saw what was on it before being given to the FBI.