1. have or create a connection to something
the point I'm making links in with our earlier discussion
To link in with something or someone means to create a relationship between one thing and another or to say that two things are related. To link in can mean to connect with another person, another idea, statement or piece of work in a way that is useful or beneficial. To link in can also mean that something happened at the same time as something else, similar in meaning to tie in.