I am having trouble simplifying the attached diagram with respect to the return summing block
The Attempt at a Solution
there shouldn't be any superposition since there is only one input signal,
in the attached file I've simplified A to Be: G3/(G2-G2G3G4)
would it be correct to move the pick off lines as shown?
once the relevant block diagram rules are applied this is the point where i can't find a way to remove the summing block next to H1