As I was flying patterns at KSJC, I noticed an aircraft to my left with what seemed like two callsigns.
As you can see, the display callsign is “EAGLE” while the seen callsign is “UPS1.” When I was flying, I saw it as “UPS1,” which is why I refer to it as the seen callsign.
There’s no big issue here at all. Just wanted to make it known. I’ve never seen this before.