Why two Destiny numbers are compared at all
In Chaldean practice the Destiny (sometimes called the Expression or name number) is the reduced total of every letter. It is treated as the outer vibration of how a person is addressed — the sound other people repeat. Putting two of those digits next to each other is a compact way to ask whether two public names sit in a friendly planetary grouping, before anyone opens a birth chart.
This is still a sketch. A favourable pair of names can belong to a difficult marriage; an avoid pair can belong to a thriving firm. The value of the tool is consistency: the same letter chart and the same triad map as the rest of Jeevan Lakshya’s numerology pages, so a spelling you tested on the Lucky Name calculator is judged by the same rules here.