I was sat next to EMwB at a conference dinner in Dresden a few years ago. Generally, if you found yourself sat with him, you kept your conversation minimal, and just nudged him to carry on if he stopped talking.
He started telling an anecdote about Hannah Reitsch.
In surprise, I asked "So you knew Hannah Reitsch ?"
"Oh yes", he said, "very well".
I think that my eyebrows may have risen somewhat at that point as he carried on...
"Not that well, trust me, you wouldn't want to".
G