We're still kind of new to Tesla and Supercharging but was told by someone at a previous visit to one that there is an unwritten protocol to using them. If there's a lot of unused spaces, you shouldn't take one right next to someone else. Something about the pattern of numbered and lettered stalls. Could someone please explain that? Also had a situation tonight that we found puzzling. Had pulled into one of 4 stalls (actually 3rd from the left), no one around, and was close to finishing charging. A Tesla pulled in next to us and parked in the last stall to the right of us. We saw him pull in, plug in and we guessed headed out to one of the local nearby restaurants. Our charging finished a few minutes later and we got out of our car and disconnected our charging handle. As I was about to get back into our car on the passenger side, I looked over to his car and his charging port light was out. It was plugged in but no lights of any color. Struck me as very odd and mentioned to my husband who said that sounded strange to him too. The driver hadn't come back to his car so we couldn't ask him about that. Could our finishing our charge have affected his charging?