With all meals provided, the directors obviously don't go hungry! (4,5)
I believe the answer is:
full board
'the directors obviously don't go hungry' is the definition.
I can't tell whether this defines the answer.
'with all meals' is the wordplay.
'with all' becomes 'full' (I can't justify this - if you can you should give a lot more credence to this answer).
'meals' becomes 'board' (I've seen this in another clue).
'full'+'board'='FULL BOARD'
'provided' acts as a link.
Can you help me to learn more?
(Other definitions for full board that I've seen before include "that leaves no room for more notices?" , "Provision of bed, plus all meals" , "Hotel arrangement" , "Provision of bed and all meals at hotel" , "a deal in a hotel?" .)