Extended breather needed after following brother on ascent (3-5)
I believe the answer is:
'extended' is the definition.
'breather needed after following brother on ascent' is the wordplay.
'breather' becomes 'lung' (you breathe with your lungs).
'needed after' says to put letters next to each other.
'following' becomes 'f' (used when citing page numbers etc).
'brother on ascent' becomes 'arf' (I can't explain this - if you can you should give a lot more credence to this answer).
'lung' after 'farf' is 'FAR-FLUNG'.
Can you help me to learn more?
(Other definitions for far-flung that I've seen before include "Extensive" , "Distant, remote" , "Remote or widespread" .)