Offering a slightly different opinion here, based on the extraordinary math / physics / chemistry I’ve survived in my Uni days - almost nothing in this universe allows for such concentrated and highly differentiated gradients (even oil / water / salad dressing has its cloudy boundary). A star’s surface isn’t really much of a surface as we like to see as a photosphere - where light escapes this boundary is still “cloudy” - they have an atmosphere.
So how does this play into astro aspects? Those of you at or near the boundary, the “color” of the next sign will diffuse into your actual sign, and you won’t really “feel” like a highly concentrated sign, but much more likely you’ll feel like a majority of your sign with aspects of the next one over bleeding into yours.
Paint a color wheel and allow borders to touch, at the edges of a blue and yellow boundary will be slightly green, and the further towards the middle the gradient will slowly disappear. So where does this diffusion stop? I have no idea, but I’ve come across enough 29/0/1 degree people that don’t really feel strongly towards the primary sign in question.