The Libertarian Convention’s response to Trmp’s speech has got to be seen to be believed. It was extremely vociferous and hostile. It also showed Trmp can still follow the teleprompter very well and does not always present himself as someone who can’t string two words together.
I watched at double speed but I watched. It is, perhaps, the first time he had to face such an unsycophantic audience and he seemed to feed on it. You can see the whole thing here:
https://www.c-span.org/video/?535695-1/president-trump-speaks-libertarian-party-convention
I especially liked their push back to his plans on environment and energy.