I love the white-noise that comes off a phrase like "it's not quite for us". It's right up there with ...
It's not a good fit for us.
It's not what we're looking for.
It's not what we're looking for at this time.
It's not the direction we're leaning towards.
... and so on.
The "Sorry about the time it's taken to bear bad news" part refers to the one year it took them to get back to me. That, after I had to ask them where my manuscript was. The one they lost. The one I had to re-send. What a satisfying conclusion to a long, pointless episode.