I'm hesitant to try to out geek Vittorio, because it's evident from this that he is supremely qualified in the art of over-thinking (to which I only aspire).
To model an STS as an RP-IP molecule, to bring in Kirchoff ..... I have tears in my eyes, it's just too beautiful.
I will however humbly suggest that any physical model for 'claims chaining' would benefit from an extraneous and superfluous analogy with chains of genetic information.
For all the hype DNA gets, the actual work of translating the information within DNA's recipe into a medium (proteins) that can be used directly by the cell is done by RNA.
So, DNA are the claims, RNA are the claims transformers.