Plainly
look up a word, understand it — no rabbit hole
germane
adjective/dʒɜː(ɹ)ˈmeɪn/
meaning in plain English
Directly connected to the thing you're talking about and important to it.
Picture a germ—if it’s germane, it’s the exact bug that matters to the story, not any random microbe.
for example
Her point about saving money was germane to the discussion about budget cuts.
Imagine you’re debating whether to bring an umbrella and someone mentions the weather forecast—suddenly, their comment is germane because it directly ties to your decision. Or ask yourself: why does the color of your shirt matter when you’re discussing the meeting agenda? Only if it’s germane to the topic at hand.