One example of this is integration methods. Within an LOB, all services are free to talk to each other in any way they see fit, as decided by the squads who act as their custodians. But between LOBs, all communication is mandated to be asynchronous batch, one of the few cast-iron rules of the very small architecture team.
From real estate Australia, lines of business work together and their services can communicate however they'd like. But between services in different lines of business, async batch communication only. Interesting.
