Conga line for the Delhi dossier? (6,4)
I believe the answer is:
indian file
'conga line' is the definition.
'indian file' can be an answer for 'line' (Indian file is an example). I am not certain of the 'conga' bit.
'delhi dossier?' is the wordplay.
'delhi' becomes 'indian' (I can't justify this - if you can you should give a lot more credence to this answer).
'dossier?' becomes 'file' (a dossier is a file or set of information).
'indian'+'file'='INDIAN FILE'
'for the' acts as a link.
Can you help me to learn more?
(Other definitions for indian file that I've seen before include "One behind another" , "Succession of singles from" , "Single line" , "as documented in Chennai?" .)