That is one possible interpretation. Another is thatHannibal and Will survived and they came back to have an old friend for dinner.
There is A LOT of ways that one can go from here:
Maybe they are dead. Maybe one is. Maybe they both survived and are on the lam. Maybe Frederick Chilton will recover and hunt Hannibal.
Oh, that'd be great. It felt like they were setting him up a bit to become more Hannibal-esque... all his suffering has propelled him into a league comparable to Verger.
One thing's for sure, this is far better as a series finale than season 2's lol could you imagine?