Green’s Dictionary of Slang

connected adj.

1. (orig. US) having links to someone influential, whether legitimate or otherwise.

[US]Ade Hand-made Fables 27: The highly connected Couple was certainly In Dutch on the Progeny proposition.
[UK]K. Sampson Powder 22: Witty, glamorous, rich, connected.
[UK]J.J. Connolly Layer Cake 9: I can really only entertain people who are somehow connected, who come to us quoted.
[US]G. Pelecanos Night Gardener 112: If they was men, shit, they’d be connected, and it would come back on you.
[US](con. 1973) C. Stella Johnny Porno 23: She fucked old man Vignieri, she is connected.
[Aus]L. Redhead Thrill City [ebook] I may be out of the biz, but I’m still connected.
[UK]J.J. Connolly Viva La Madness 79: Mort also had a few confabs with some seriously connected guys.

2. (US) being a member of an organized crime syndicate.

[US]E. Torres Carlito’s Way 19: He was a down cat and he was connected.
[US](con. 1985–90) P. Bourjois In Search of Respect 72: My ‘connected’ Italian-American baby-sitter noted that the floors above the restaurant were the official meeting hall for high-level members of the Genovese clan.
[US]N. Green Angel of Montague Street (2004) 175: Dirt bag. Always claimed to be connected, but I never believed him.
[US]Codella and Bennett Alphaville (2011) 45: The last guy involved was the son of a connected guy, too.