Broadcast of Sonny & Cher is set at the same time (11)
I believe the answer is:
synchronise
'set at the same time' is the definition.
'synchronise' can be an answer for 'set' ('set'->'synchronize' is in my internal thesaurus and 'ize'->'ise'). I'm not certain of the 'at the same time' bit.
'broadcast of sonny cher is' is the wordplay.
'broadcast of' indicates anagramming the letters (I've seen 'broadcast' mean this (letters scattered or cast around)).
'sonny'+'cher'+'is'='sonnycheris'
'sonnycheris' with letters rearranged gives 'SYNCHRONISE'.
Can you help me to learn more?
(Other definitions for synchronise that I've seen before include "Get time together" , "Coincide temporally" , "Cause to agree in time" , "Occur at the same time" , "Cause to happen at the same time" .)