Gloss over
Etymology
Two unrelated words named “gloss” collide here. One, from Greek “glossa” (tongue, language), means an explanatory note. The other, of Scandinavian origin, means a shiny surface sheen. The idiom “gloss over” leans on the second — to put a fair, misleading polish on something rough — perhaps helped by the first sense of explaining away.
verb · /GLAWS OH-ver/
To treat a difficulty or fault briefly and lightly so as to conceal or minimize it.
What it names
Deceptive smoothing — passing quickly over the awkward part to give a false impression that all is fine.
Example
The prospectus glossed over two years of losses in a single upbeat sentence.
Related idea
To gloss over is to hide detail dishonestly; to distill is to remove detail while keeping the essence. One conceals what matters; the other concentrates it.