close in on vs follow

close in on

verb
  • To catch up with in a chase; to near the end of a pursuit. 

  • To near a goal or completion. 

  • To enclose around; to tighten or shrink; to collapse. 

follow

verb
  • To go after; to pursue; to move behind in the same path or direction, especially with the intent of catching. 

  • To walk in, as a road or course; to attend upon closely, as a profession or calling. 

  • To understand, to pay attention to. 

  • To subscribe to see content from an account on a social media platform. 

  • To live one's life according to (religion, teachings, etc). 

  • To carry out (orders, instructions, etc.). 

  • To be a logical consequence of something. 

  • To watch, to keep track of (reports of) some event or person. 

  • To go or come after in a sequence. 

noun
  • In billiards and similar games, a stroke causing a ball to follow another ball after hitting it. 

  • The act of following another user's online activity. 

How often have the words close in on and follow occurred in a corpus of books? (source: Google Ngram Viewer )