Doesn't matter. He wouldn't land a punch. If he chose to box with GGG, he would get knocked out by the first or second punch GGG lands. His best bet is to just close his eyes and wrestle.
I agree with Mayweather having a solid chin but after that first round CM's punches were boardering on "Paulie Power"
Conor was afraid to get DQed, its why there was no rough-housing. Would you wrestle FMJ and lose most of your purse?
If Golovkin fought CM in a boxing match is those little gloves, Golovkin would actually seriously hurt CM, Canelo would seriously hurt CM too. I would honestly fear for McGregors health.
McGregor is smaller than GGG and he didn't impress me with his punching power against Floyd. So, yes GGG could take those punches, no problem. Mc should just take him down and work those submissions. Boxing with a boxer is just asking to get Tim Sylvia'd. Mind you GGG wrestled in his younger days so it might not be as easy as Couture/Toney.