Eventually punctual (2,4)
I believe the answer is:
in time
This clue is a double definition.
'eventually' is the first definition.
('in time' can be a synonym of 'eventually')
'punctual' is the second definition.
('in time' can be similar in meaning to 'punctual')
(Other definitions for in time that I've seen before include "What an orchestra should be" , "on schedule" , "What musicians aim to be" , "eventually" , "Early enough" .)