(19 Mar 2023, 11:05 pm)Storx wrote Believe they're both technically right.
As far as I'm aware the 57 Durham to Kelloe and 57A throughout was commercial (it's all it was until a few year ago) until they won the 58 and extended the 57 through to Hartlepool.
Seems Arriva registered to cancel the 57 outright and 57A from Trimdon to Hartlepool but appears Durham pulled the plug for the 57 extension at the same time (now the 59).
I think Arriva were commercial between Durham and Kelloe originally on 57 and Durham to Trimdon on 57A.
Kelloe to Hartlepool and Trimdon to Hartlepool (formally a 33!) are the contacted elements.
I think you are right though, Arriva originally registered a Durham to Trimdon, but looks like DCC have asked them to do something different whilst they procure the connection. All very last minute!