One often opening doors for an Eton man? (3,6,3)
I believe the answer is:
old school tie
This clue might be a double definition.
'one often opening doors for' is the first definition.
The definition suggests a singular noun which matches the answer.
'eton man?' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'an' acts as a link.
Can you help me to learn more?
(Other definitions for old school tie that I've seen before include "A source of unfair advantage" , "System of favours between those with a privileged education" , "Symbol of upper class solidarity" , "Upper-class emblem of loyalty" , "something to wear with advantage?" .)