Out riding today, on a very long ride. Hit a lame attempt at a pothole repair and it was a good jolt but nothing ridiculous. My shifting completely stopped working. I could press and hold the button of my junction at the handlebars and the rear der would skip up and down the cassette, so things were connected. I picked a gear and suffered home for about 55 miles, didn't want to be fiddling with trying to shift via that button. Get home and after getting some food and water in me I go out to see if the connectors were loose (again). All were solid. Unplugged and replugged everything and still nothing. I download the Shimano e-tube software and did some troubleshooting. Software finds all pieces and says it has an update for the internal battery. I scratch my head but let it go. Unplug everything, hold the bike up, hit the buttons and low and behold everything is shifting again. So I ask, wtf?