路由到Angular中的非Angular页面

I am converting a large server rendered app to use Angular. Because of the size, we are doing it a bit at a time. During this conversion period, part of the app will use Angular and part will not. This means that routing sometimes will route within the Angular app and sometimes it will need to transition from old world to new world (easy) or new world to old world (harder).I am converting a large server rendered app to