First auto transplant failed and cancer spread?

I have non-hodgkins lymphoma. I was diagnosed a year ago and had it in my chest and neck. I did R-Chop chemo and that got rid of the cancer in my neck and shrunk the cancer in my chest. Then since the cancer was still in my chest I did R-ice chemo and that shrunk the cancer in my chest then moved on to auto stem cell transplant. Recently I found out the auto shrunk my tumor in my chest but didn't get rid of it. Also the non-hodgkins lymphoma has spread to my liver and one kidney. They now are starting another regimen of chemo immediately and want to do an allogenic transplant. If the auto failed does the allogenic have a shot at working? Has anyone done both?