I was able to break the impasse and build trust by getting PO to agree to architectural deliverables in a sprint. He was skeptical but with some sort of defined

I was able to break the impasse and build trust by getting PO to agree to architectural deliverables in a sprint. He was skeptical but with some sort of defined behavior for acceptance he was OK with it. Saying "ima go build a framework for this, back in a couple months" is usually a non-starter. Also from reading this thread I am still convinced that you cannot jam process down people's throats and there is no single solution. What you can do is create a tone deaf hated ass-backwards process that make people quit the company.