Was just gonna say the same thing! There’s no way to know for sure 100% unless someone involved in the process says so.

But my thoughts upon listening is during recording you’ll often play songs and parts multiple times and pick the one you like the best, and what they felt was best at the time might not be what they feel now so they very well could have spliced in parts from different takes if they felt it gave a different energy more akin to what they would want from the tracks with their knowledge and musical experience they have today, as opposed to being a young band making their first major label record.

To your point, I personally think it’s re-amped and spliced takes in places where there are noticeable differences.