The confirmation hearings and inauguration weren't concurrent.
Correct.
None of the hearings occurred on the day of the inauguration. They didn't continue until 3 days after the inauguration. I.e., not concurrent.
http://www.investopedia.com/news/trumps-cabinet-senate-confirmation-hearings-schedule/
However the events themselves don't need to be concurrent (which they weren't), in order for the coverage of said events to be concurrent (which it is) - as we're still hearing coverage of the inauguration turnout the following week, when they could be directing more of that attention to the hearings (which they're covering but not with the scrutiny they could if they weren't focused on "alternative facts" and things of that nature).
I'm not sure if I give Trump the credit of having duped the media into doing this, or if they've done it on their own - but it's interesting nonetheless.