I hate to go straight to conspiracy-thinking, but I have a hard time believing the visit was a 'mistake' on the part of the Clintons. They know the implications of this kind of thing. But I can't quite guess what the point would have been. To disgrace Lynch? To flex muscles? I dunno.
did he want Lynch to recuse herself?

it makes no sense?
I sure don't get it. I suppose it could have just been a mistake of arrogance. But I assume the Clintons know how to keep a secret meeting secret, if that was the intent.
I agree with you, if they wanted the meeting to be secret, they know how to make a meeting or conversation secret without a gazillion FBI agents and secret service agents and pilots and copilots around to witness such meeting, so it could be it was just an arrogant and thoughtless meeting of Bill's...if so, Bill should be knocked upside of the head by Hillary...
The case was already near it's end, 3 weeks ago, it was leaked there would be no criminal charges against her....this meeting could not have influenced the investigation, it was essentially over already??? So if it was for nefarious reasons on Bill's part, what in the world could the reason be? I swear, sometimes I think he doesn't want Hillary to be President...in 2008 he did something really stupid like this that hurt Hillary's run too! (I can't remember what it was, but just remember it was bad for her)