OP - I didn’t think those details through but, totally! I can picture for this that Terry goes to town on Daniel without Daniel ever seeing his face (mask off only in dark room). It only dawns on Daniel after, when

a) he learns that Terry is back. Cut to black. or

b) he sees Silver for the first time and Silver greets him in a way that makes it obvious it was him that night. Maybe he refers to Daniel by whatever Daniel’s mask persona was 🎭

Many possibilities really!