Confidentially French resistance moving in to record intelligence (5,4)
I believe the answer is:
entre nous
'confidentially french resistance moving in' is the definition.
I can't tell whether this definition defines the answer.
'record intelligence' is the wordplay.
'record' becomes 'entre' (I can't justify this - if you can you should believe this answer much more).
'intelligence' becomes 'nous' (I've seen this in other clues).
'entre'+'nous'='ENTRE NOUS'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for entre nous that I've seen before include "in secret" , "private" , "Between ourselves (French)" , "in confidence" .)