Do you see CPEC and cooperation with China more generally as helpful to this problem?
CPEC is grand strategy, while this intelligence game is just low-level tactics. The real problems in Pakistan are much bigger than these BLA militants (e.g. we've got the IMF running our central bank.) CPEC infrastructure's long-term benefit (for Pakistan) is to get the hell out of the Western financial orbit, once and for all. This is why US/India wants CPEC to fail, they are seeing the threat 20-30 years down the line.