Rc + brilliant + boundless set up?

Overview

Hi, I keep reading on this combo but it is so confusing i would appreciate if someone can enlighten me. I have boundless from 2023, i just got brilliant a month ago, once i get the SUB im planning to PC boundless to RC. Then i apply for Boundless again for SUB then i am guessing i can cancel Boundless and repeat for churning. Is this the correct strategy? Also is there much benefit to adding amex bonvy business on top of this? Im guessing it only make it little bit easier to shoot for titanium s

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