"“Based on the information available to us, we see no indications that Trump Tower was the subject of surveillance by any element of the United States government either before or after Election Day 2016,” the statement from Burr and Warner said."
I think that could be a very accurate statement. They weren't after, "Trump Tower" so, of course, it wasn't surveilled.
On the other hand the computer server we hear so much about wasn't in Trump Tower it was off site. And not spying on Trump Tower doesn't eliminate spying on one Donald J. Trump.
That's what they will all hang their hats on.
From the parsing, they are purposely staying away from intel swapping with foreign partners.
-PJ