Conspiring thus far? (2,2)
I believe the answer is:
up to
'conspiring' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for up to that I've seen before include "Busy with" , "As far as a certain point" , "working at > till" , "Capable of" , "Plotting" .)