Nunes really claimed incidentally gathering of info??

WaPo reports that David Nunes, chair of the House Intelligence Committee, claimed there was incidental info due to other wiretaps. Now, this bothers me because he went to visit the White House (um, if you are looking into the president you shouldn't be visiting with him) plus clearly the FBI denies this.  (NBCNews) Here is the thing: if they were wiretapping Trump Tower, then isn't that enough to raise some questions??? The Russia thing is a problem!