Chad wins hastily after Frank has lunch (4,8)
I believe the answer is:
open sandwich
'chad wins hastily' is the definition.
I can't judge whether this defines the answer.
'after frank has lunch' is the wordplay.
'after' means one lot of letters go next to another.
'frank' becomes 'open' (synonyms).
'has lunch' becomes 'sandwich' (I am not sure about this - if you are sure you should believe this answer much more).
'open' next to 'sandwich' is 'OPEN SANDWICH'.
Can you help me to learn more?
(Another definition for open sandwich that I've seen is " Something to eat".)