[dao-]

I suspect TBNE is pretty much what your parent comment meant by "...only for DB trains, and their partners like regional transport associations."

I.e. DB would only partner with regional operators on tracks where DB itself doesn't operate anymore.

[linohh]

no. it's up to locomore to join, they just don't want to. same with HKX, in the beginning they didn't want to join, eventually they did.