What you're saying is that if we assume, a priori, that there was a conspiracy, then this explains something about the conspiracy that's we are assuming.
There's nothing surprising about it. The assassination quickly put in motion the combined investigative capabilities of the Dallas Police, Dallas County Sherriff's Department, FBI, Secret Service, USPS Postal Inspectors, CIA, and probably a few other agencies that I didn't mention. A small army of investigators can cover a lot territory in a small amount of time.
Sure, but aren't you surprised that the Keystone Cops (DPD) managed to identify and capture Oswald within an hour after assassinating the POTUS. There were many records broken that day and Hoover and Johnson even appeared to be clairvoyant. Otherwise, they had surprisingly detailed knowledge of Oswald, who they were trying to link to the Kremlin as part of the coup, but they didn't seem at all concerned it might have been a precursor to WW3. But that's just my take because I'm convinced this was a conspiracy for many reasons. When I assume that, it allows me to flesh out motive, etc. and then everything fits. The magic bullet goes away. Oswald's lack of prints on everything. The backyard photos. Oswald's murder. The autopsy anomalies. The behavior of the SS, FBI and DPD.
Regarding the DPD, in what universe does a lead investigator to the assassination of the POTUS, Captain Will Fritz, notice 3 spent hulls on the floor of the sniper's nest, walks up to them, bends over and picks them up with his bare hands and places them in his pocket, then later tosses them on the floor for a photo-op? Maybe in your universe, not mine.
Regarding the SS, in what universe does the driver of the limo, Greer, hear gunshots striking the limo and slow it down to a near stop, turns around to look at JFK until he sees his head explode, then steps on the gas and hightails it outta Dodge? Was that in the SS manual?
Regarding the FBI, Hoover was the de-facto boss of the Mafia at the time and James Angleton possessed a very salacious photo of Hoover that brought him onboard.
Regarding the CIA, James Angleton was acting director of the CIA after Allen Dulles got fired by JFK. He was Dulles' right hand man and fellow Nazi who plucked Oswald from the CIA's fake defector program to be the patsy in the coup. The CIA assigned George de Mohrenschildt to be Oswald's handler and he was a proven Nazi. Dulles was the highest ranking Nazi sleeper cell and after getting fired he was not about to go quietly into the night. He was forced to make his move, which was to assassinate JFK and link it to the Kremlin to provoke WW3. The 4th Reich would then pick up the pieces in the aftermath. When you don't have nukes at your dispose, the 4th Reich had to take over from the inside using sleeper cells thru coup d'états and establishing autocracies.
The irony here is that what's left of the 4th Reich is the far right, which includes Putin and Trump, which is far more plausible than Oswald being a lone nut, IMHO.