In diplomacy, words are chosen very carefully and every word counts.

Tillerson said. "The President brought up the concerns of the American people regarding Russian meddling in our electoral process.  Putin denied it."

Then the Russian side claimed that Trump had accepted Putin's denial.  A White House "source" said that it wasn't true, but neither Tillerson nor Trump has made a follow-up statement.  Trump did not hold a news conference at the end of the summit.