Not sure, but I think they refer to the option to make like a private routing BETWEEN known Acinq users, I mean 2 phoenix nodes do not need to make a round travel of their sats through other public nodes if they are already linked to the same central Acinq node.
And that is a good thing, because public routes will be more expensive for the users and also to maintain.
Consider this option same like using a LNbits with multiple users.
Something like that tried Anton Kumadaroski (SBW wallet dev) few years ago. I can't find his video demo anymore, but was an interesting concept of "private routing".
Not sure, but I think they refer to the option to make like a private routing BETWEEN known Acinq users, I mean 2 phoenix nodes do not need to make a round travel of their sats through other public nodes if they are already linked to the same central Acinq node.
And that is a good thing, because public routes will be more expensive for the users and also to maintain.
Consider this option same like using a LNbits with multiple users.
Something like that tried Anton Kumadaroski (SBW wallet dev) few years ago. I can't find his video demo anymore, but was an interesting concept of "private routing".