I see a lot of "here is a way we can connect routes up" posts so im gonna suggest my idea I will be using RRO and RSN for this one we get about a 3 miles from Hagen Hauptbahnhof in Rhein Ruhr Osten said route begins to unload not to fast as to cause to much lag but not to slow to have it very noticeable by 2 miles near Hagen RRO is mostly unloaded except 2 miles of it from Hagen but 2 miles of Ruhr Sieg Nord is loaded as you go through to the RSN side, RSN is loaded by the time you get about 3 miles from Hagen on the RSN side and RRO is unloaded. It maybe a little complicated and confusing but I hope you get my point
Your not the only person that suggested this, theres a other person who suggested this but i still like your suggestion