Hmm makes sense but still glute is completely dormant when hip flexors are stretched...i wouldnt even have noticed it was like this if i didnt do that stretch....there doesnt seem to be any difference in strength apart from my right leg rvj being a good few inches below my left...but thats normal i believe...
i think i have really tight hip flexors and once i loosen them up glutes will become more active..maybe its that its fully stretched already and by contracting my glute it would stretch it too much and damaged it so my body involuntarily decides to deactivate it..?
anyway ill do sl glute bridges and birddog stuff + carry on with stretch and see if it improves...
that website is nice though thanks for the reply