How is “tie in” used?

In The Dawn Wall (2017), one line is: “Tommy ties in and just flips that switch.”

Which movie is “tie in” from?

The clip at the top of this page is from The Dawn Wall (2017).

to match or agree with sth; to link sth or be linked to sth; to happen, or arrange for sth to happen, at the same time as sth else

Heard in 6 movies

1
tie in (with sth)
to match or agree with sth
This evidence ties in closely with what we already know.
2
tie in (with sth)
to link sth or be linked to sth; to happen, or arrange for sth to happen, at the same time as sth else
The concert will tie in with the festival of dance taking place the same weekend.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

Tommy ties in and just flips that switch.

Said in 8 films · #1