I see this often with trainers. Not usually a big deal at all. But when I see it across different platforms, it's not something I commonly see and I watch adsbexchange daily. Former Navy aviation guy so it always interest me to watch what's going on. Also common when jets share a squadron to use similar callsigns. This may be mission based instead? None are transcontinental so far, so it's difficult to tell.
I see this often with trainers. Not usually a big deal at all. But when I see it across different platforms, it's not something I commonly see and I watch adsbexchange daily. Former Navy aviation guy so it always interest me to watch what's going on. Also common when jets share a squadron to use similar callsigns. This may be mission based instead? None are transcontinental so far, so it's difficult to tell.