There is a rare achievement to get your chapter to lvl 150 on Xbox One idk if it’s on other platforms but it’s there. I found this info on gamertagnation.com
This is something I've never tried before~! I'm not 100% sure what you get by achieving this though. Could you share some more details? And thanks for the info bud~!
I will do more research but ik you need to be high lvl for hive missions and others.