Routing
Two-way connections, jumps, and path calculation.
Each district maintains it's own connections; however the flow of abilities and information is two-way meaning. If D1 locks the connection to D2 abilities flowing from D1 -> D2 will fail. Now, if D2 keeps its connection to D1 open... this does not mean D2 can send abilities to D1 becuase it is locked from their side. Think of it instead of one door to being two doors one opening in and one opening out (like joining hotel rooms). Both must be unlocked for you to go through.