tying in with

Verb

tie in with (third-person singular simple present ties in with, present participle tying in with, simple past and past participle tied in with)

1. (idiomatic, transitive) To become associated with (a person or group of people); to connect with.
   • The first thing I did, and this is even before we had a writer, I went to India by myself. Actually at the time, I tied in with 60 Minutes, who were going over. They took the adopted mother to meet the birth mother.2016 December 8, Matt Grobar, quoting Garth Davis, “'Lion' Director Garth Davis On His Journey Through Saroo Brierley's Life & Rooney Mara's Magnetic Humanity”, in Deadline.com, archived from the...
2. (idiomatic, transitive) To be related or relevant to.
   • Although this race ties in with what I'd like to say, it's not the main reason I'm writing.1982 August 7, Robert A. Ellgas, “Gay Games”, in Gay Community News