One of the two is no longer a factor ... they invited the object of litigation to dine and visit with them privately. That leaves just Divine intervention. Watching Yellowstone, anyone?
Perhaps the invitation was for other reasons, such as to gauge 0bama with a face to face meeting? or to quell future critcism that he (Roberts) was “mean” and just doesn’t like 0bama? Also, IIRC, knights would lift up their visors before fighting so they could each get a good look at the man who oppsed them.