Can someone help me,
I thought that you wanted your T-cells to remember what an actual covid type virus is, not have high antibodies looking for only one spike.
If you have lots of antibodies after 6 months than your cells may still be making strange engineered spike proteins here and there ... ?
Antibodies are still present doesn’t exclude T cell immunity. It really isn’t an indirect evidence of smoldering infection as you suggest. Take for example hepatitis B. You can find antibodies decades after native infection. I wouldn’t read a lot into it except immunity seems long lasting.