If I recall, TAPV, LAV(UP) and CCV were all part of the same $5.2 billion package to solve the problem of the vulnerability of our then fleet of LAVIII and RG31 in Afghanistan and the wearing out of the Coyotes. I'm not sure how much CLS and ADM(Mat) at the time were at loggerheads on the issue because they both wanted better protection and manoeuverability. While we were already slated to leave Afghanistan, the failed-state type of mission was still on our agenda. I know both favoured CCV. I don't know where they stood on TAPV or who defined the requirements.
TAPV went into the planning in 2009, the CLS left the job in 2010 and it wasn't until 2012 that Textron won the contract for TAPV.
I'm not sure how much you can lay the actual Textron version of the TAPV on the then CLS's feet. He would have been gone shortly after the broad need was established and, I think, before the detailed requirements were laid down.