I have a difficult time imagining someone murdering another person by strangulation and then carefully and intentionally staging their own suicide to make it appear the two of them died by hanging from a low mounted railing, the deaths occurring through some sort of morbid but loving togetherness plot. Regardless of how many times that I consider that possibility, imo it’s still way too farfetched.
At the beginning, a murder/suicide theory seemed remotely possible if HSs cause of death had been different than that of her husbands.
I believe KW has previously posted here that he believes a third party provided assistance to BS in this act, including potentially staging the scene. Not to put words in his mouth, but I believe that's how KW feels this may have played out.