It occurred to me that there’s another possibility here:
The Clintons have got to know what Bathhouse Barry has set up behind the scenes for after he’s gone. Some kind of poison pill situation for his successor so that the blame will fall on them when things collapse. So Slick and Hilldawg are in this campaign to raise funds (in addition to the foreign money through their corrupt foundation) and ultimately lose the election but reap the massive financial windfall and simultaneously avoid being the one that gets the finger of history pointing at them when things go sideways.
The problem is that the media aren’t in on the plan and are doing their level best to prop up her candidacy and destroy Trump in the process. So Slick had to sabotage the Hilldawg campaign and he used the private meeting on the jet as a way to monkey wrench the momentum and potentially turn off some of the leftist sycophants in the media. Yes, the delays will still happen so no indictment will come down prior to the election (nor prior to the transition to the next president), and Hilldawg and Slick will sail off into the sunset and live out their remaining years in luxury in some non-extradition country, each with their young female lovers.
That is a nice scenario, but BC could have done that all on his own, or HC could have sabotaged her own campaign with one lousy interview, without any help from LL.
The salient fact is that BC and LL agreed to meet on the sly, taking the chance of any number of different fallouts, and almost all of the MSM press was in the dark for a couple of days.
At their word, even if only grandkids were discussed during the meeting, it still leaves an appearance of impropriety that at least nominally they both took a very big chance about. The big unmentioned elephant in the jet would have been the investigation. It would have come up in both of their minds at the first awkward pause in the 30 minute conversation and every awkward pause after that until the end. Both knew meeting was against legal conventions (if not rules). both knew the downside risk of aborting HC’s run for the presidency. Additionally LL must have realized that she was putting her reputation in at least some risk, and her professional future at least some downside risk.
I looked at
NY Rules of Professional Conduct
https://www.nysba.org/DownloadAsset.aspx?id=50671
from presumably LL’s state bar.
However, I could not find any particular rule of professional conduct that seemed to apply.
Perhaps there is a rule governing the actions of federal AGs?