What Happened Between Cress Williams and China Anne Mcclain?

The fourth and final season of Black Lightning has been four episodes in now and China and Cress haven't been in any scenes together. Last night's episode had them communicating through a door. Whatever happened must have been pretty serious.

https://www.lipstickalley.com/threads/what-happened-between-cress-williams-and-china-anne-mcclain.4447335/