Benefit of batting is discussed over wine (6,7)
I believe the answer is:
income support
'benefit' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'batting is discussed over wine' is the wordplay.
'batting' becomes 'in' (cricket term).
'is discussed over' becomes 'comesup' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'wine' becomes 'port' (port is a kind of wine).
'in'+'comesup'+'port'='INCOME SUPPORT'
'of' is the link.
Can you help me to learn more?
(Other definitions for income support that I've seen before include "Social security payment" , "some extra money?" .)