Make possible a reconciliation of Len and Abe (6)
I believe the answer is:
enable
'make possible' is the definition.
(I've seen this in another clue)
'of len and abe' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'and' is a charade indicator (letters next to each other).
'len' put after 'abe' is 'abelen'.
'abelen' is an anagram of 'ENABLE'.
'a reconciliation' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for enable that I've seen before include "Make it possible for someone to do something" , "Make possible using baleen" , "Activate" , "Capacitate" , "Allow" .)