...yes they were in that same barn KIK... this is how I saw it... when Clara put her hands into that telepathic gel in the console of The Tardis and then Danny rang her on the phone it interrupted her train of thought and sent them back in Time to Danny's childhood instead of hers hence the reason for them meeting a young Danny Pink... that then led The Doctor with his obsession to travel forward to the other extent whereby it led to Orson Pink at the end of time... when The Doctor was rendered unconscious after opening the pressure lock of Orson's spaceship and that unknown entity was banging on The Tardis door Clara panicked and flew The Tardis again by putting her hand back in the gel of the telepathic circuit...
...and because the unconscious Doctor was the most prominent thing on her mind at that moment because he was unconscious it took The Tardis back to The Doctor's moment of his childhood when he first developed his obsessive fear that drives him for the rest of his life and that has been driving The Doctor all the way through the episode up to this moment in time... that there is the link to me for her being in that barn... when The Doctors guardians came in and the man mentioned that..."he can't just run away crying all the time if we wants to join the army"... she replies... "he doesn't want to join the army... I keep on telling you!"... in which he replies... "well he's not going to the Academy is he that boy... he'll never make a Timelord!"...
...that's when Clara realised that it wasn't the young Danny Pink again and that it was in fact The Doctor... he was out sulking in that barn away from all the other boys in the house (perhaps they had been picking on him or something?)... that's why he was in the barn and that's why Clara was there inadvertently... The Tardis had picked up her subconscious thought on her worry about The Doctor while she was connected to it through the gel...
...when The Doctor called out from The Tardis for Clara the young Doctor was getting up to investigate and she grabbed his leg to stop him discovering The Tardis and himself as an adult Timelord... (all hell would have broken loose and may have changed the course of The Doctor's history if he did)... so it was Clara that by sheer chance that was his greatest fear that drove The Doctor all his life!... a great twist methinks!... lol!...
...when on the day that The Doctor had decided to end the 'Time War' with that Universal Bomb in 'The Day of The Doctor' he went back to that barn in his childhood (perhaps as some sort of comfort zone for him?) where he had to face his greatest fear and conquer it all those years ago before detonating it... his fear started there (because of Clara grabbing his leg) the fear of detonating that bomb is where he wanted to end it all... hence both scenes in the barn... remember... Clara told him as a child that one day he will come back to that barn to face his greatest fear so sublimely she put that thought in his head which made him do it all those years later as the 'War Doctor'...
....Clara really came into her own in this episode... the way that she handled both The Doctor and Danny Pink as children was her dedicated vocation as a Schoolteacher coming to the foreground... her 'duty of care' to the welfare of them both was the most important thing in her life at those moments... it was one of my favourite 'Clara' moments that I have seen in this series... and you are right KIK... that lighting and photography of in that barn was spot on wasn't it?...
...anyhow... I hope that I have explained it all on my take of it all clearly enough... it may not be the right explanation but that's how I read it all lol!... cheers.
