And there goes another one: Honeywell International Inc.’s former chief antitrust counsel Gary Zanfagna has returned to Big Law as a partner at Paul Hastings. 

Zanfagna, who chairs the American Bar Associations’ antitrust law section, is a key addition to the firm’s relatively small antitrust practice. The group includes one other member, Thomas Brown, a partner based in San Francisco. He helped recruit Zanfagna.