Was the Feast of Tabernacles suspended for the Sabbath day?

Does anyone know of a source that states that the Feast of Tabernacles is suspended for the day of the Sabbath? I am aware that the feast is seven days, followed by an eighth day. There are specific sacrifices listed for each and every day, including the eighth. What I am hoping to discover is if anyone might know a passage from the Talmud that says or suggests that the Sabbath superseded the feast, causing the seven days to have a pause. I have it written down in my notes, but whatever it was that I read, I didn't write down the specific passage, and it's been years at this point. I need to reread it to see if it says what I remember it saying. But, for the life of me, I can't remember where it was, or even precisely what it said. The best I can say is that it gave me the impression at the time that the feast didn't supersede the Sabbath, essentially causing the seven-day feast to span eight calendar days because of the one-day pause for the Sabbath. If anyone can give me some direction on this, it would be appreciated. This includes information specifically to the contrary. If you know of something that pointedly says that the Sabbath does *not* supersede the Feast, that would be equally useful.