DeCarlo was a capo in his own right. After that crew split up following the death of Moretti and Vito's ascent to boss, they were all pretty much rewarded their own crews, so to speak. Boiardo had a crew and cooperated business wise with DeCarlo, DeCarlo and the elder Boiardo were close, going back as far to the Boots "First Ward Mob" days. Boiardo & Catena, not so much. Those two supposedly weren't very close, Catena I believe was one of the suspects when Bioardo had an attempt on his life made with a shotgun, it was initially suspected other members of Moretti's group did it, but it was most likely the Mazzochi's or Abner Zwillman's underlings.