No Communication between cops and snipers in Trump assassination attempt

So the police saw the shooter on the roof and never bothered to communicate this to the snipers and the Secret Service, the people who could actually neutralize Thomas Crook before he was able to get a shot off?
This is an embarrassment.
How the hell is this even possible?
They did this after allowing him to fly his drone over the rally and knowing about Crook for an hour while he was parading himself around with a rangefinder.
Listen to the Secret Service hearing again and ask yourself how this debacle was allowed to occur.
I don't know how else you can take this other than believing this was a setup.

"No information regarding a weapon on the roof was ever passed to our personnel. How is that even possible? Information that was in law enforcement channels but did not cross over and make it to Secret Service Awareness. The individual was first seen by law enforcement on the roof at about six zero eight. we're still working to perfect the timeline based on the radio comms and all that. The officer saw him and called out his arm. That was the first citing where he had the rifle. And then he and that was related to the Secret Service Command Center at the my understanding is no secret service it was not relayed to them. It's a narrower time frame though. It's probably about maybe up to half a minute between the time he's seen with the rifle and when the shots are fired. But there's still time. At that point if there were an open channel of communication in which they were able to tell him he's got a gun take him out. You could still take President Trump off the stage. You could have him duck. You could have the shooter neutralized. Do you not have a channel of communication by which they can say gun take him out? So again, senator, that information stayed and stayed in local channels and did not make it over to Secret Service. They did not consider that relevant. You're saying that the local police didn't consider that relevant enough to pass along to the Secret Service? So I think that they were in the midst of dealing with a very critical situation, and they…articulated that over the radio, as I understand it However, it was never relayed over."