had been differing

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of differ.
  differ

  verb (used without object)

  to be unlike, dissimilar, or distinct in nature or qualities (often followed byfrom ).

Related Words

• alter
• conflict with
• contradict
• contrast
• disagree
• diverge
• modify
• vary