Yes, this was an unusual occasion.After taking the cup, he gave thanks and said, "Take this and divided it among you. Luke 22:17
They drank from the same cup; they divided it amongst each other.
What was the Passover really like?
Barnes comments:
And Clarke the same thing:Verse 17. And he took the cup and gave thanks. This was not the sacramental cup, for that was taken after supper, Lu 22:20. This was one of the cups which were usually taken during the celebration of the Passover, and pertained to that observance. After he had kept this in the usual manner, he instituted the supper which bears his name, using the bread and wine which had been prepared for the Passover, and thus ingrafted the Lord's Supper on the Passover, or superseded the Passover by another ordinance, which was intended to be perpetual.
It does not appear that our Lord handed either the bread or the cup to each person; he gave it to him who was next to him, and, by handing it from one to another, they shared it among themselves, Lu 22:17. In this respect the present mode of administering the Lord's Supper is not strictly according to the original institution.