McGregor and Dominance MMA Management CEO Ali Abdelaziz had clashed at the first UFC 229 press conference in NY last month.
That left White to answer questions for a few minutes while everyone waited for McGregor. "Let's go. If you have questions, I am here". He picked up a microphone and said, "It's 3 p.m., this conference is beginning".
Earlier, Nurmagomedov had sat on the podium for 10 minutes waiting for McGregor to arrive before walking out.
Former two division champion Conor Mcgregor is a well known knockout artist and has a history of starching his opponents inside the Octagon. He was as salty as ever but markedly toned down from his more rapid performance on September 20 in NY. McGregor is in full mind-game mode and showing up late has always been in his arsenal of tricks.
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On Thursday, White not only didn't bat an eye in McGregor's direction after he stormed on the stage late with a whiskey bottle in hand to comically blame the Las Vegas traffic, he didn't have an issue when asked about McGregor's punctuality. "[Nurmagomedov] just said what he had to say".
While Nurmagomedov and McGregor did not see each other on the stage Thursday, their mutual dislike was evident when they spoke about their fight on Saturday.
"I don't care about his mentality, I do not care". McGregor was doing an open workout - with fans watching - and sharing some typically hyped-up comments.
"Is he inside my head?" He didn't say anything the last time. "On Saturday night, we are going to see this". "I think Conor wins".
"No, not yet. I need to talk to the big boss, Dana White, to make it happen". I have to worry about myself.
"If somebody is late, this is not my problem".
"I have to be careful with him", Nurmagomedov said. "He knew what he was signing up for, I've been later than this".
"15 minutes I'm here, this guy didn't come, this is disrespect. have a good night", he said. He doesn't want to be around me and these people. He doesn't want to be around these people. Give me answer someone if you can. I am f--ing ruthless.
"I am coming to put a hole in this man's skull", he said. I'm starving for this man's head. Iaquinta did little but survive, and Nurmagomedov was even able to handily beat him on the feet. "You didn't have the bollocks to stay out here".
"I did not plan this", McGregor added. "I'd like to fight Ali". I've experienced it all.
That drew the ire of McGregor, who went after Nurmagoedov and his trainer. I'm going to aim between that man's eyes and this is never over. "This is never over; never, ever, ever over".
McGregor, who was already UFC's featherweight champion, won that bout to become the first UFC fighter to hold two belts simultaneously.
As if it weren't any more obvious, Nurmagomedov explained that he wanted to get everything started on time because he is focused on his weight cut, which meant he wanted to stick to his "weight cut day".
Silva, the former UFC middleweight champion whose United States Anti-Doping Agency suspension for two banned substances expires on November 10, heard about McGregor's interest and is open to fighting McGregor next. According to White's metrics, Saturday's fight has a huge chance. "Showtime" had his lightweight title reign ended more than three years ago, but he's eager to get it back.