Exactly TB. After the massacre, Neri was sent to take command of Tessio's regime (by the way, he was discovered by Clemenza) although temporarily. He ended up as security chief for the Corleone Nevada hotels and Rocco became the Corleone's capo.

It seems so unrealistic that Puzo would limit the Corleone family to one capo.

"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
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