Comparable with what you might hear in Spanish bullring when let out subject to conditions (2,6)
I believe the answer is:
on parole
'comparable with what you might hear in spanish bullring' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'let out subject to conditions' is the wordplay.
I cannot really understand how this works, but
'subject to' could be 'on' (I've seen this in other clues) and 'on' is present in the answer.
'let out' could be 'parole' (paroling is a kind of letting out) and 'parole' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'when' acts as a link.
Can you help me to learn more?
(Another definition for on parole that I've seen is " Subject to conditions, released".)