I have always thought of it this way...

Men compartmentalize their thoughts. Each in its own room ir box. They open a door or lift the lid and think about that subject without disruption from other thoughts.

Wome have one big room, and all the thoughts are present at once, some louder than others. This arrangement allows women to make connections, see connections, because all the dots are in one place.

It is not that women lack focus, it is that they just have to identify the loudest thoughts, then keep the others a bay, while they think on that subject.