The emails were handed over because they weren’t considered to be classified information. So it’s quite unlikely that they reveal discussions among people who had any inside knowledge about the Assange case.
> The records were revealed by Assange himself in a Sunday night interview with Spanish television programme Salvados in which he explained that an official request for information gave him access to instant messages that remained unclassified by GCHQ.
https://amp.theguardian.com/media/2013/may/20/julian-assange...
I don’t know anything about the internal workings of GCHQ, but one would hope that information is shared on a need to know basis. Assuming this to be the case, the vast majority of GHCQ employees would know no more about Assange than you or me.
In fact, people can be even more cut off from information if they're at a low enough level inside an agency like that because they're forbidden from viewing leaked information to avoid jeopardising their clearances.
A GHCQ staffer working on, say, satellite signals intelligence for one of the regional desks is almost certainly not going to have any useful inside information on the case of someone like Assange.
