Rear brake flex hose question

Hey no problem, I have encountered more brake hose problems in 45 years than one would expect.
I'm all right with brakes but not something I look fore ward to doing. I just changed everything out PPV, MC , rotors , calipers , brake lines , never ran into the rear hose problem before . I have read a lot of the threads in the past. I wasn't getting peddle , pull the MC bled it again put it back on nothing. Its really nice to be able to come on here and get sent in the right direction. the help is most appreciated.