Surely, more formal communication is the job of a manager who uses command and control as the main style of management. Mostly formal control co-exists with rule-centricity and manual approach as the key feature of the management style of the manager concerned. A true leader on the other hand communicates informally with her/his people most of the time; for her or his main job is to inspire them to work for the shared vision of the organization, which necessitates caring for his people and motivating them through personal touch, empathy, transparency, celebration and fun, and not just through formal communication.

Well sometimes but not every time