interface someone or something with someone or something
to bring about a complex connection of people and things, in any combination. (Originally having to do with computers.) Let's interface Walter with the staff from the main office. I want to interface my data with Sam, who has some relevant statistics from prior years.
interface with someone or something
to develop a connection or interaction with someone or something. Call Walter and set up a meeting so we can interface with him. This computer is meant to interface with as many as five others just like it.