"one person reported feeling like he was a brick on the wall for an endless amount of time" I interpret these kinds of experiences as a form of dissociation as

"one person reported feeling like he was a brick on the wall for an endless amount of time" I interpret these kinds of experiences as a form of dissociation as well, to me it seems the perception of time dissolves under certain forms of intoxication. I've had such experiences with cannabis, ketamine, salvia and a range of 5-HT2a-active substances. Mental exercises can bring about similar experiences too, like some forms of meditation and prayer. To me personally they haven't been as unsettling as some people describe. It's an interesting phenomenon, similar to how some episodes of Star Trek manage to communicate how a character has lived a full life in half an hour stuck on some 'subtemporal' planet or so before they're rescued and brought back to the rest of the crew, one can have the experience of being a brick in a wall for eternity or having lived for centuries as a hermit in a desert cave.