Whatever the Fed is doing is just a side effect of things that happen in the global economy. It has more to go with globalization and China than the US economy.
Treasury auctions are kabuki theater[1]. Thanks to the Primary Dealer system it's impossible for an auction to fail. While the nominal rate may bounce around a few basis points, at the end of the day the Fed absolutely controls rates. They will literally create reserves and lend them to primary dealers at whatever rate is necessary to assure Treasury sells as many securities as it needs to at something near the target rate.
[1] Yes, that does imply artfulness.
You can say a dollar is worth whatever you want, but unless people believe you, it doesn't matter.
But for things like mortgages, personal loans, corporate bonds, those are not control by the fed and rates are set through auctions.
Of course, the fed controls the money supply so can signal whether they will increase or decrease it, so the rates set at auctions are influenced by what people think the feds will do.