When someone gets promoted to a job where he has to supervise his former job, the new occupant of his former job usually has a hard time having the required level of autonomy for decision making.
It is a phenomenon I have observed in different scenarios. I do not yet know whether it has a name.
It can get quite messy, with people in their 360 degree relationships thrown into an awkward situation.
It helps when there is an environment or a system that ensures the heat from the friction does not turn into an inferno.
– Osasu Oviawe