I apologise up front for linking to Twitchy, which is actually a great example of the "telling the selected truth and commenting deftly" phenomenon they are reporting to here. But I assume the actual Loretta Lynch tweet is accurate. She sure ain't standin' by her man here. So ignore the site's commentary on Lynch throwing Comey under the bus.
Who's lying? is the cry from the conservative sites. As we never know which incident is going to be the tipping point in the demise of the Republic I don't want to fault them for an essentially accurate question, but really, it's oversimplified and calculated to rile up the base. They know better. At least, those conservatives who have read C.S. Lewis's That Hideous Strength, The Screwtape Letters, and "The Inner Ring" know better. Comey and Lynch are survivors of the highest levels of bureaucracy, with skills honed over many years. No one says things, because one can be quoted, pinned, destroyed. Yet things are understood. So Comey met with Lynch many times, but never-did-he-ever disclose his suspicions, she says. Sure. She had no idea what he was thinking. A complete surprise. You have to go to the second level to ferret out about lying as a precise term. She says he never said, he says he did say; the most likely explanation is that they both understood, allowing that both understood imperfectly, exactly what was up. It's not only dangerous, it's also sort of gauche to be direct. It shows you don't understand the real rules, you aren't to be trusted, you might blow things up.
It's part of why Trump strikes stark fear into them. He lies in a completely different manner, not by talking in code or demonstrating an elaborate Tea Ceremony, but by just blowing things out his ass, some of which turns out to be true and some not. (The usual answer is partly true, may or may not be technically true, but in complete disregard of Washington codespeak, which is unforgivable. His comment about the riots in Sweden last year is a great example of this.)
So the who's lying? approach has no answer. Both, almost definitely, but which one more? Which one technically, which one in spirit? That is not necessarily ever going to be clear. The people who speak their language slowly lose the ability to translate it into the everyday categories the rest of us use.