I am not sure whether Solly C or Jimmy I is the street boss and which one is the street underboss. I would think Solly C because he seems to be a little more white collar.

In 2006, a man in Park Ridge was gunned down with a shotgun. His house number was opposite of Solly C. Park Ridge Police suspected it was a botched hit on Solly C.

Not sure how high Sarno was ranked. I'm not sure anyone really knows. I think he may have been in charge of Cicero Crew 1 (Marcello's old crew). Maybe there was a mini mutiny between Solly C and Sarno.

I think Zizzo was loyal to DiFronzo. Hatch was a threat to Marcello's power when he got out of the penitentiary. The attempt on Solly C was possibly due to a spat between Solly C and Sarno to Sarno's much maligned leadership skills.