Yes but the crumbles are compressed.
I may just be blowing hot air here. It just seemed that way to me.
I've noticed that pellets and crumbles expand and puff up more than mash - especially the pellets. Some of that is water absorption and some of that is the tiny air bubbles that are embedded in the feed.
The mash that I'm using now does not expand or puff up nearly as much because it i's just crushed / cut whole grains (and other stuff) - not processed into a crumble or pellet.
I used to have bucket overflow problems with crumbles and pellet and the FF is cooking just as nicely with the non-puffing mash feed.
Not that it's good or bad - just a difference I noticed.