Many thanks Turnbull, you really do have a Doctorate in Godfatherology!

Fair point that “it wouldn't have been difficult for Sol to read Tom's reactions and figure out that Tom favored the deal”

It seemed Sollozzo hadn't revealed the Tattaglia connection ie: Sollozzo still gotten to see Vito without using a major family vouching for him as leverage

I remember your earlier posts, in addition to the above regarding Barzini being the 'silent partner' because [wanted to dethrone Vito and take over] - among others, extracts: from a couple of your previous posts....Proof that I am a diligent student!

If Sonny had shut up
Barzini was younger than the other Dons, impatient to be Numero Uno, had more to gain from a deal with Sol--and would give him better terms

Tessio/Barzini meeting
Barzini was impatient with being the Number Two Don

Was Barzini's beef personal?
I think Barzini's moves against Vito were "personal" in the sense that he thought of himself as No.1 waiting in the wings, impatient to be the top dog in NYC, younger than the other Dons, whom he regarded as "Moustache Petes" (per the novel). But, I don't think he had a personal grudge against Vito