According to a mate that's gone as a DEC, process is: Company Interview, Sim check, FOs do the full DLR test, then final interview with DLR and company panel. If you pass the lot you are offered contract.
Sim will be all raw data, departure, NP approach, etc.
Non type rated guys are rated and contract conditions ammended.
No PMs as I don't know any more than this, thanks.