Dashboard Tile not Updating on a Direct Query Live Tile

I've read other issues way in the past on this--and from reading it appears that tiles on a Dashboard should auto-update every 15 minutes with a direct query report.

Scenario:
I have a report that uses Direct Query for an on-site SQL server

It is pinned as a Live Page to a dashboard

I noticed today the dashboard was not updated.  I went into the report that uses Direct Query and it also showed old data.  I had to click the "Refresh" button on the report, then it loaded new data--and then the dashboard updated.

Questions:

1) I thought the dashboard updated every 15 minutes on a direct query regardless if that report has been opened?

2) Why did I need to click on the Refresh button after opening the report?  It showed it running the query--but the data was still old.

Using Chrome.

Thanks,

Ryan