Thank you! Great detail-oriented question. In this case we had an extra deep casing profile, which was able to (mostly) absorb the depth of the wainscoting and cap. Shallower casing profiles we normally "pack out" so that they relate properly to the paneling. Hope this helps!

Perfect! Thanks so much

Also, is the casing around the window colonial trim? I have colonial trim so I just wanted to see if I can replicate it.