Mars venus compatibility?

I'm not entirely clear on this union.

I understand that certain placements can conjunct and make 2 people compatible even when the direct planets are not aligned (or whatever)
but I also recently found out (and it makes so much sense looking over past relationships)
That mars (for the feminine partner) and Venus (for the masculine) connect when associated with sexual compatibility.

But Is that the entire compatibility, or just during sex? And if not just during sex then what does that mean for the feminine Venus, and masculine mars? If they're not compatible does that matter at all?

Just need a little clarity

coombe2016-11-09T08:03:39Z

Mars Venus Compatibility

?2015-07-06T03:14:30Z

Men are from Mars women from Venus, that is a way of saying the two are not compatible in any way.