Well if you put it like that then anything has got an angle of attack if it's moving! Which I agree with.
The important angle of attack, and the one that we are referring to when we talk about it, is the angle of attack of the wing. The AoA of the wing is variable along it's span due to wash out.
You first asked what the angle between the flight path vector and the pitch indicator on the HUD was. It is the difference between the aircraft pitch attitude and the aircraft flight path. It is not an angle of attack indicator.
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