After i watched the film I read a few critiques of it that say, at the beginning of the film the guests arrive twice. When does that happen? When I watched it back all is I can see are the guests congregating near the front door then when the two female servants attempt to leave the guests walk through the front door. The servants wait for the guests to go upstairs and then leave through the front door.
It does happen, and at first I thought that there had been an editing mistake (they do and say the exact same things), but then the maid servants leave after the second entrance.
Another glitch of the Matrix... I mean, another deja vu occurrence happens at the dinner table, when the host makes a toast to a virgin girlfriend or some such, but the other characters' reactions vary from one toast to the other.
And since they had to re-enact the end of their night to get out of the house, the double entrance makes sense. The cycle had to be completed.
Ha! I watched it on Hulu and for whatever reason I happened to have paused it twice. When they enter and the toast scene. I thought Hulu was helpfully rewinding a few seconds, but I remember thinking how weird the reception to the toast was. It was different bc it was the second time! Intriguing.
There's a conversation about the fact they enter twice and how Buñuel explained it to the actors here with this interesting clip of an interview with Silvia Pinal from the new Criterion DVD....