Mopar timing chain tensioner

i could be mistaken but, i do' nt think that down shifting reverses the applied pressure to the cam , the crank yes but the valve springs should still hold the tension on the same side of the timing chain .. that crank has to pull the cam around no matter what direction the applied force to the crank... but like i said i may be wrong, and i am sure that someone will correct me if i am.....