I've given some thought now-and-then to what a Katalepsis/Otherverse crossover should look like. The Thorburns in Sharrowford, Maisie becoming an Other, Blake making a deal with Hastur, and many different premises in-between. It's interesting to compare Wildbow and Hungry as serial writers deeply embedded in Weird Fiction, especially the neoclassical Weird Tale.
Wildbow starts more from the Mundane and gradually cranks up the Tentacle Knob as chapters settle and the plot thickens.
Hungry has the Tentacle Knob turned up pretty darn high right off the bat but dials it back through the characters' development.
Wildbow deals very heavily in how ostensibly ordinary and even tedious personalities and circumstances have a deeply eldritch undercurrent when penetrated as threats.
Hungry deals very heavily in how ostensibly bizarre and even grotesque specific personalities and circumstances have a deeply sincere undercurrent when received as people.
Pact starts with a young man enduring the perpetual drama of his family, the constant acrimony that he wants to get away from at any cost. Katalepsis starts with a young woman who sees monsters every waking moment and a god for the lion's share of non-waking moments. Blake's situation isn't universal but pretty common in dramatic fiction. Heather's situation is more commonly framed from a purely antagonistic or even facetious narrative-point.
I'm speaking broadly, of course. Both are fantastic angles in their own right and all-around are why I love reading Weird literature.
How should the two approaches be reconciled?
My mind goes to Delta Green's Scenario: God's Teeth.