I don't exclude ANY testimony.
Naturally though.....if indeed the unanimous north side of the citgo station claim is correct.....this proves that the plane did not hit the building which means this was an operation of deception.
Therefore it would stand to reason that some witness accounts would have been fabricated/planted.
In all investigations it is up to the investigator to determine which accounts are accurate, inaccurate, embellishments, or lies.
Quite typically all exist and this is certainly the case in regards to the Pentagon attack.
Things like independent corroboration usually tend to lend credence to accounts.
And when you have independent corroboration from Police officers......it is pretty much a slam dunk.