Caught in the middle of a miscommunication

It's freaking hard to be in the middle of transacting parties....

*sigh*

Recently I was tasked to discuss something in behalf of 'A' because apparently 'A' does not want to do the explaining. I did what was instructed. I explained the whole scenario to the 'B'. 'B' only paid attention to that single detail instead of understanding the whole scenario. And so, 'B' confronted 'A'. When I called 'A', he sounded upset because he pointed out that he should have been informed of such details.

So, I called 'C', the source of the details which I discussed. I told him what happened. 'C' said that he informed 'A' of the whole thing and he's asking as to why 'A' is surprised and upset where in fact, he knew of the whole thing. I told 'C' that it would be best if he talks to 'A' to clear things out... that if there's a best person to explain everything, it would be him. End of conversation....

My thoughts?... maybe they could have discussed such among themselves since they'll be confronting each other anyway. I was also thinking, maybe 'A' got upset because I discussed too many details to 'B'... that maybe I should have consulted 'A' as to what to say to 'B'. Maybe 'A' doesn't want to 'B' to know that certain bit. Arghhhhhhhh.... EWAN!!!

I know 'A' is upset, disappointed or whatever ... I didn't mean to emphasize anything or to imply anything. I just presented the whole scenario then proceeded with the details as to how everything happened. It just so happens that 'B' took that one bit of the whole scenario.