I suppose it was a rhetorical question really, not expecting a definitive answer but nevertheless replies are interesting.
CasualClick is right of course, most executive aircraft will not use main airports like O’Hare - IRL I actually created and built the General Aviation Terminal at Newcastle International (EGNT), specifically for these types of movement, and modelled it on the US FBO. And future flights will of course be doing just that, but for now I’m just “delivering” the new baby home, doing 2 hour legs for the practice and getting to know it, no pax and no cargo. I chose O’Hare as I’ve not been there before and I thought it would be interesting.
I always like to have a purpose to my flights and the BBJ features strongly in an idea I have forming.