R5600 LAG question

Is is recommended to add ports into LAG from different pipelines? If we configure a LAG with port 3 from pipeline 1 and port 7 from pipeline 2. What will happen if port 3 from pipeline 1 goes down? Would it impact the traffic? 

I am trying to understand pros and cons of adding ports into LAG from same pipeline and different pipelines. I could not find a clear F5 reference document or SK article.