When using navigation component is it ok to use

navControler.graph.addAll(otherGraph)

/`navController.graph.addDestination()` after navigation has started? For example I want to dynamically decide, based on some user choice, that I want to add a whole bunch of new destinations. Will this work OK (+with composables in the graph)? Or is navigation component designed only so that whole graph must be constructed at once on the start?

If the user returns to the app after the process is restarted for whatever reason, by what mechanism would they return to the navigation destination/back stack state that they were at previously if it included dynamically added destinations?

Indeed, nav component doesn't seem to have such mechanism and it would fail. I wonder still will it work prior to restart. Trying to make some decisions upfront, need to take this into account.