Before Conor McGregor made history by becoming the UFC’s first simultaneous two-division champion at UFC 205, there was Dan Henderson.

Henderson, 46, won both the welterweight (183 lbs) and middleweight (205 lbs) titles in PRIDE FC, becoming the first fighter to hold two belts simultaneously in a major MMA promotion.

When McGregor became the concurrent UFC featherweight and lightweight champion in New York, however, ‘The Notorious’ demanded part-ownership of the UFC.

“Who owns the company now? There’s people who have shares in the company, celebrities — Conan O’Brien owns the UFC nowadays. So where’s my share? Where’s my equity?” McGregor said at the UFC 205 post-fight press conference.

Henderson, a 19-year veteran of the sport, believes McGregor acted out of line at the press conference and says winning two belts has already affected his head.

Conor had a great fight, I'm glad that when I held two belts it didn't effect my head like it has his. https://t.co/HEtaqBVQri — Dan Henderson (@danhendo) November 15, 2016

McGregor, who knocked out Jose Aldo last year to seize the featherweight title, added the lightweight strap to his resume when he outclassed and TKO’d Eddie Alvarez in the second round at UFC 205.

As well as demanding shares in the UFC, McGregor has also hinted at fights with Floyd Mayweather and welterweight champion Tyron Woodley.