I have a portal containing different processes (let's call them process A, process B, ...).
When entering the portal you're in a "neutral" area which is not depending on any process. When clicking on a process ("process A" or "process B") the portal has to provide a navigation for some functional requirements (search, creating a new item inside the process, ...).
Based on those facts I see some challenges:
Do you agree that the navigation should, if possible, be consistent across all processes?
How big is the chance the user is confused by not having a navigation in the "neutral" area but inside the processes?
If "high": How to prevent that? Do you think showing the navigation inside the "neutral" area is a good idea? With disabled navigation elements? I think this would be confusing as well ("why the hell are those navigation elements disabled?")