Just a theory (based on knowing a lot of cops & state troopers): Perhaps... perhaps... the police are being very careful NOT to use the names of high-profile individuals over monitored radio channels (even if encrypted).
I remember a big deal being made in the PA State Police about troopers using Nextel “push-to-talk” phones to communicate with fellow troopers rather than using monitored police radio nets. That was squashed quickly when it came to light.
I am not a police officer. Just making a generalization based on scuttlebutt in unconnected incidents.
I could see that being the case
Remember...the operator said she/he turned up the volume so he/she could hear what's going on....Maybe...but sounds like there was some double tasking going on...first to the dudes who weren't watching the monitor...than to some higher up...then to the police...