Mixed responses but continues forward (7,2)
I believe the answer is:
Here is my best explanation:
'continues forward' is the definition.
'presses on' can be an answer for 'continues' (I've seen this before). I'm unsure of the 'forward' bit.
'mixed responses' is the wordplay.
'mixed' indicates anagramming the letters.
'responses' with letters rearranged gives 'PRESSES ON'.
'but' is the link.