Thanks Turnbull So in the novel: there was no “My compliments”
Tattaglia vouched for Sollozzo and then conspired with Barzini, Sollozzo and the other Families to murder Vito Nice!

• saving Sonny’s life

I doubt anyone would have seen it coming from Carlo
Also as Tom said "Things are starting to loosen up a little bit" perhaps lulling everyone into a false sense of security
Besides Sonny was charging out like an enraged bull.... I doubt even Luca could have stopped him

Thanks also for clarifying “Tessio under wraps”