C Law - if that's what's been advised then I assume they are still claiming ownership through adverse possession so no real change around timescales involved.
The
Practice Guides 4 and 5 on Adv P explain the process and can help give you some idea of timescales.
Expedition can reduce the initial wait time but thereafter the registration requirements still have to be met and that often takes time (2-3 months) to complete in most cases