Do people socialize with bottom tier chapter?

All top sororities don’t hang with bottom frats. Most middle sororities don’t hang with most bottom frats (with some exceptions). On the other side of things, the very bottom sororities (sk & aopi) only have events (which are different from which parties they go to) with bottom frats. Upper bottom sororities (axo & agd) have events with a mixture of bottom and middle frats. The main difference between the frat tier system and sorority tier system is that for the sororities, it’s a lot easier to hang out with higher ranked houses even if your house isn’t the best, while for frats it’s a lot harder to hang out with higher tier sororities. That’s at least my experience, I might be wrong on some things. Also, everyone can go to whoever’s parties as long as they know someone, so.