Yep, there is a switch for decoupling the cars in the cab Rudolf has mentioned it in his 363 guide https://drive.google.com/file/d/1wKhdPTIp8EDm5VqyairtQaIx6KWwMBZ2/view?usp=sharing
No, I think someone was very kind and invested his free time for the community, for what community should be grateful