Combine data from two (same) questions in single survey

I have two identical questions in the same survey (Likelihood to Recommend on a 5 point scale). This was part of an A/B test where each question was in it’s own block and randomized.  Now I am trying to pull the combined Likelihood to Recommend into a CX Dashboard and I want to combine the two questions. (side note, there are about a dozen other surveys I’m tying in that ask the same questions and I’m trying to pull them ALL together for a holistic LTR).  When I’m in the dasboard, I see how I can pull in all the sources (surveys) but I can’t figure out how to combine the two LTR questions from the single source. I went back into the survey thinking I could Edit/Create a New Field, but I’m not having any luck there.  I was able to create a new variable in the Cross Tabs, but that variable doesn’t carry over to the dashbaords. :( Appreciate any advice!