correlate
verb (used with object)
to place in or bring into mutual or reciprocal relation; establish in orderly connection.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He had been correlating notes in his journal with the thought in the back of his mind that he would never finish it, but he felt that a small respite might be relaxing.
From Cum Grano Salis by Randall Garrett