It is interesting in this connection to wonder about the usual Catholic teaching that "Purgatory" (which, at rock bottom is NOT held necessarily to be a place or duration) will end at the end of the world. I've never worked that out to my complete and detailed satisfaction.
Yes that is essentially correct. You believe the process of glorification requires a period of time after death (in purgatory). Protestants believe this happens instantaneously, just as Justification does.
And please know I never said sanctification “stops” at death. It is completed at death because Christ finishes it.