When Pip goes to the Blue Boar who does he see? But who does he think he sees?

Pip sees Mr. Drummle at the Blue Boar.

When we drove up to the Blue Boar after a drizzly ride, whom should I see come out under the gateway, toothpick in hand, to look at the coach, but Bentley Drummle!

Pip believes he has seen Orlick outside of the Blue Boar.

A man in a dust-colored dress appeared with what was wanted,--I could not have said from where: whether from the inn yard, or the street, or where not,--and as Drummle leaned down from the saddle and lighted his cigar and laughed, with a jerk of his head towards the coffee-room windows, the slouching shoulders and ragged hair of this man whose back was towards me reminded me of Orlick.

Too heavily out of sorts to care much at the time whether it were he or no, or after all to touch the breakfast, I washed the weather and the journey from my face and hands, and went out to the memorable old house that it would have been so much the better for me never to have entered, never to have seen.