DFC wrote
Funny that it is usually single controller operation at the other end also
Not always ...you HEAR a single voice ..but there can (in the case of my approach radar unit) be an executive /radar controller an approach controller and even an assistant(though here not often) listening in .All can hear readbacks and can if neccesary prompt the "speaking" controller if something has been picked up incorrectly.
We stand a better chance of not making a readback error or general error due to workload than a pilot on single crew ops.