Quote: "Do you mean the permanent cessation of vedana? Doesn't that only happen at pari-nibbana?"
Yes. But pari-nibbana has two meanings. It refers to the complete cessation of the
five aggregates, but there are two ways to understand the five aggregates.
1. Form is ones actual body, feeling, perception, volitional-formations and
consciousness are also these actual things. When understood in this way the
five aggregates can only cease at death.
2. The five aggregates are all fabricated mental-objects. The "form" objects
are representations of things known through the five senses. The "feeling"
objects are representations of feelings, and so forth for the other three.
These mental-objects can all cease at any time, so there is no need to wait
until one's death. This cessation is called pari-nibbana. It results in the
state called nibbana without residue.
"And what is it that he neither extinguishes nor kindles, but abides having
extinguished? He neither extinguishes nor kindles form, but abides having
extinguished it. He neither extinguishes nor kindles feeling ... perception ...
volitional-formations ... consciousness, but abides having extinguished it."
[Bhikkhu Bodhi, Connected Discourses, page 918, part of SN 22.79]
Note that when the "form" objects cease, actual feeling, perception, volition,
and consciousness, in relation to these objects, also cease. Another type of
consciousness takes over, this is the "object-less" consciousness.