Taking off factory fuel hoses

Just like the title says, I know how to take off the rail side of the hoses with the push-in plastic clips but not so sure on the side that goes to the metal lines by the firewall. One is obvious, it has a tab you pull out and can pull the line off, but the other has some kinda tangs sticking out on each side but pushing on them doesn't seem to release it :scratch:...


P.S - is there a source for new ones? I tried the dealer, they're discontinued and the local parts houses didn't list them...