Hello Perry and List
I have had the experience of deploying my Bionic Ears made by Silver Creek, which intercepted both sides of a 2-way transmit/ receive device.
The perp's were in my yard and communicating with there boss , 1 female and 1 male agents.
Both sides of the communications were heard clearly.
Now in your case it's possible that a parabolic device was used and output to a recorder. Over time the perp's may have penetrated the other end
that would by the called person stole his or her phone and copied the sim card.
If we don't have 24hour electronic security employed then it is possible to be subject to the type of crime.
Have your client check all security codes in his or her alarm panel. then swept using NLJD and don't forget the IR threat red for sure green for target
positioning of the laser. Have your client walk his zones at night and have portable spot light and video capturing device at the ready.
Regards Andre Holmes
https://www.nes-ets-usa.com