Even if they were in a group, Noah, Don, Jordan, and King Elbas had to take care of their training and projects separately. The cultivation journey was a path that experts had to walk on their own, and the occasional team-ups could only last as long as they didn't need to take care of their power.
The four didn't separate. They remained in different spots of the same region to focus on their cultivation or complete projects. King Elbas and Noah had to work with the black mineral, while Don and Jordan had far more serious matters to attend.
The two hybrids were in a special period of their cultivation journey. Don had to begin the preparations for his breakthrough, and Jordan needed to fill the vastness that separated her from the eighth rank.