I had a similar experience going through Gettysburg about six years ago. Lots of gust. Even blew a rain deflector off of one of my windows and blew cover loose on tongue mounted bike rack. Turns out there was a tornado in the area that I was unaware of at the time
Nevertheless my PSD Excursion towing a 10.5K loaded 39' trailer using a Hensley was rock solid. I was traveling 15 south at the time
I never felt a whole lot of anything while driving except the cover and rain deflector came off/loose which forced me to pull over.
Once pulled over I could feel the gust, but while driving it wasn't very noticeable. So I do believe it's possible not to feel the gust no BS involved