I'll start by establishing my potentially flawed understanding of solutions:
A solution is a completely homogenous mixture. That means that the two (or more) substances are evenly distributed throughout the mixture (or the cross-section of the mixture in question), and that this distribution is happening on an atomic/ionic or molecular level. One can get a pretty even distribution of the components in a mixture if one swirls it nicely, but it will never be homogenous unless they are mixing at the smallest level, and therefore not a solution.
For solids dissolved into a liquid, the solid must be a salt, so that the ions it is composed of can break a part and connect to the water molecules (for example). As such, for a solid to be dissolved into a liquid, that liquid must also be polar, like water.
When talking about solutions made of fluids (gases and liquids), the molecules or salts doesn't have to break apart. They can remain whole, because the homogenous distribution will occur anyways. This is because of the diffusivity of fluids; entropy will distribute the molecules/salts evenly, and as such, this distribution isn't happening on an atomic level. (Perhaps the distribution does happen on an atomic level if the liquids are made of salts, not sure).
Okay, now that my understand, or lack thereof, has been established, here's the question:
If two nonpolar or two polar liquids are mixed together respectively, will the mixture always be a solution, because of fluid dynamics evenly dispersing the molecules, without any deconstruction of the molecules?