I had something similar to whats going on with you Swoop. Sometime last year, I kill an La7. Someone says "nice kill Apache" in the text buffer. Before I can respond back, there is a response "but I didn't shoot anyone" or something like that. It was from Apache##. Don't remember the number.
If memory serves, he was from AW and was known as Apache there and several folks here knew him. Well, I've been Apache for a looong time. It bothered me, but I didn't say anything.
It got really confusing that night as folks were saying things to either him or me and we would both answer. I said as much, seeing I'm an old and get confused easily.
This Apache## was an extremely nice guy. He PM'd me and said he would change his ID next business day. Apparently he did. I never got to thank him for that.
I hope Hobo gets his callsign back tho. Being from WB as well, there is only one Hobo.