HUGE HUGS
Peanut has made his journey to Bridge to join his mates, carried by the wings of your love. You have not failed him in any way since you have assessed and reassessed the situation at every step - no owner could have done better than you and you have done all the right things.
Please try to treasure your extra weeks with your handsome boy once you are past the rawest of pain. You have given Peanut the chance at life that he truly had; it is not your fault that it was not to be.
PS: Severe bloat is like a tsunami and comes in waves. It is not necessarily the first wave that is the strongest. You can never predict them (nor when they stop coming) as they can sometimes be several days or weeks apart; and you can never predict severe bloat - it always hits out of the blue. In between waves, a piggy is fairly OK. And some do actually survive, so it was still all to play for.
Be kind with yourself and try to picture your boys playing together at the Rainbow Bridge.
I know that this one is as cheesy as can be but it is also surprisingly soothing (unless you find it totally irritating).
It works for all ages:
Rainbow bridge video I made, I hope it can bring some comfort to others