I am not going to ask this question to be argumentative, I'm asking it because I feel like I don't know enough about knots, hitches, and ratings to speak correctly about this:
If you are using a 5000 lb rated 10mm rope for a bridge (or even a tether?) And you use a 3500 lb rated accessory cord to make the friction hitch to clip into (again, either as a tether or on an adjustable bridge), isn't the rating of just the smallest rope you use the rating the matters?
What I mean is, if you are hanging from the 6mm TRC, and that is attached to an Oplux tether, isn't your TRC the weakest point of all of that? Would the same hold true with an adjustable bridge? I just don't want to make any foolish errors and get myself hurt, that's why i'm asking.
Side Note: with a blakes hitch, is it bad to use a cord for the hitch that is smaller than the main line?