And when it’s in between we cannot even see it (when it’s exactly in line).
We can see it’s there though - I’d say that also counts.
I believe you were referring to one kind of eclipsed and with my subtle edit I was referring to a different kind of eclipse :)
I can think of one single class of eclipse where the Moon is between the Earth and the Sun (the original comment was about “in-between sun and earth”).
Sometimes Earth is the one that is in between.
Going to start a conspiracy theory that there’s a secret eclipse where the moon goes behind the sun and they won’t let us see it