It gets worse in huge orgs, each team tends to have its own protocols. To talk with "foreign" team, you have to figure out if they are teams / meeting driven,

It gets worse in huge orgs, each team tends to have its own protocols. To talk with "foreign" team, you have to figure out if they are teams / meeting driven, slack driven, use webex, only reachable via email, have their own weird thing, ignore everything that doesn't come through a manager, or only respond to service now tickets, or require a ticket AND and followup (via one of the above methods) to get them to look at the ticket. Figuring out how to talk to all the different people you need to takes several months and a lot of people leave before working it out. If you stay long enough you end up with an informal network of people in the company you know and trust and work with them to get anything done. Often these are helpful ICs working around non-responsive management.