> I don't know what's wrong, but right now we're investigating x because we suspect that's the source of the issue. I'm checking the logs and other engineer is trying to recreate the issue in a clean environment. Unfortunately I don't have a good answer as to how long it'll take, but we'll update you either when we've learned something useful or in two hours, whichever is sooner,
Just don't get too specific, especially with even a bit technically inclined ones, because they will have ideas to help and bother tech people to check their random guesses when trying to be helpful