Because when Barlow was asked in court did he see the window locked from the outside - he did not answer yes. He answered he saw nothing unusual about the window.
You are not looking for the truth you just keep making bogus claims. Produce evidence that, "when Barlow was asked in court did he see the window locked from the outside - he did not answer yes. He answered he saw nothing unusual about the window."
Produce a source that recounts his testimony and proves your claim to be true. If you can't do so then produce your basis for making this assertion. You don't even know for sure he testified so obviously have no business claiming he testified to that.
That's all I am asking because if not we have the family saying it did lock ,but no independent witness willing to swear on oath that the window they are saying was used could LOCK from the outside.
All I am looking for is the truth - we have gone round in circles on this for ever.
If Barlow did swear on oath in court he could see that window locked from the outside and JB could get through that window then I will shut up about it.
I have already established Barlow is an independent witness who said the window can be locked from the outside. He wrote such in a statement in 1985 which the Dickinson Report referenced (I even posted the screenshot of the exact paragraph that addressed such) and he also said it in a COLP statement which you posted.

It doesn't matter if he said it in court or not he said it in the documents in question so is an independent witness.
The only reason we are going round and round is because you and other Jeremy supporters don't want to face the fact the window could be locked from the outside.