Sick condition of all the legendary, iconic leaders treated at hospital (3,6)
I believe the answer is:
ill health
'sick condition' is the definition.
'ill health' can be an answer for 'condition' (ill health is a kind of condition). I'm not sure about the 'sick' bit.
'all the legendary iconic leaders treated at hospital' is the wordplay.
'leaders' suggests taking the first letters.
'treated' is an anagram indicator.
'at' means one lot of letters go next to another.
'hospital' becomes 'h' (abbreviation for hospital on maps).
The first letters of 'legendary iconic' is 'li'.
'all'+'the'+'li'='alltheli'
'alltheli' is an anagram of 'illhealt'.
'illhealt'+'h'='ILL-HEALTH'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for ill health that I've seen before include "Poor physical condition" , "Sickness" , "being far from well" , "Unfitness" .)