FWIW, I've been told I'm an exceptionally effective cross-functional communicator and that I outperform given my ability leverage my resources to recruit and align support for initiatives across orgs.
Imagine how wealthy our society would be if all the claims of by all managers about management success were actually true.
So far as I can tell, nearly all inter-management communication is useless and has, at best, zero impact. Only at the extreme margins or with select relationships does anything useful result. Like you find the IC SME who actually understand the target market, who is willing to sit with your team to set a vision.
Otherwise, nearly all managers you interact with are careerist.